Module Name:    src
Committed By:   ozaki-r
Date:           Mon Nov  7 05:25:37 UTC 2016

Modified Files:
        src/tests/net/arp: t_arp.sh t_dad.sh
        src/tests/net/icmp: t_icmp6_redirect.sh t_icmp_redirect.sh
        src/tests/net/if_pppoe: t_pppoe.sh
        src/tests/net/if_tap: t_tap.sh
        src/tests/net/if_tun: t_tun.sh
        src/tests/net/mcast: t_mcast.sh
        src/tests/net/ndp: t_dad.sh t_ndp.sh t_ra.sh
        src/tests/net/net: t_forwarding.sh t_ipaddress.sh t_ipv6_lifetime.sh
            t_ipv6address.sh t_mtudisc.sh t_ping6_opts.sh
        src/tests/net/route: t_change.sh t_flags.sh t_flags6.sh t_route.sh

Log Message:
Accept DEBUG environment variable

By doing so, we can easily turn DEBUG on/off without modifying
the ATF scripts.


To generate a diff of this commit:
cvs rdiff -u -r1.17 -r1.18 src/tests/net/arp/t_arp.sh
cvs rdiff -u -r1.8 -r1.9 src/tests/net/arp/t_dad.sh
cvs rdiff -u -r1.4 -r1.5 src/tests/net/icmp/t_icmp6_redirect.sh
cvs rdiff -u -r1.3 -r1.4 src/tests/net/icmp/t_icmp_redirect.sh
cvs rdiff -u -r1.9 -r1.10 src/tests/net/if_pppoe/t_pppoe.sh
cvs rdiff -u -r1.3 -r1.4 src/tests/net/if_tap/t_tap.sh
cvs rdiff -u -r1.3 -r1.4 src/tests/net/if_tun/t_tun.sh
cvs rdiff -u -r1.2 -r1.3 src/tests/net/mcast/t_mcast.sh
cvs rdiff -u -r1.8 -r1.9 src/tests/net/ndp/t_dad.sh
cvs rdiff -u -r1.13 -r1.14 src/tests/net/ndp/t_ndp.sh
cvs rdiff -u -r1.4 -r1.5 src/tests/net/ndp/t_ra.sh
cvs rdiff -u -r1.15 -r1.16 src/tests/net/net/t_forwarding.sh
cvs rdiff -u -r1.4 -r1.5 src/tests/net/net/t_ipaddress.sh \
    src/tests/net/net/t_ipv6_lifetime.sh
cvs rdiff -u -r1.9 -r1.10 src/tests/net/net/t_ipv6address.sh
cvs rdiff -u -r1.2 -r1.3 src/tests/net/net/t_mtudisc.sh \
    src/tests/net/net/t_ping6_opts.sh
cvs rdiff -u -r1.8 -r1.9 src/tests/net/route/t_change.sh \
    src/tests/net/route/t_flags6.sh
cvs rdiff -u -r1.11 -r1.12 src/tests/net/route/t_flags.sh
cvs rdiff -u -r1.7 -r1.8 src/tests/net/route/t_route.sh

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/tests/net/arp/t_arp.sh
diff -u src/tests/net/arp/t_arp.sh:1.17 src/tests/net/arp/t_arp.sh:1.18
--- src/tests/net/arp/t_arp.sh:1.17	Tue Aug 23 16:03:45 2016
+++ src/tests/net/arp/t_arp.sh	Mon Nov  7 05:25:36 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_arp.sh,v 1.17 2016/08/23 16:03:45 christos Exp $
+#	$NetBSD: t_arp.sh,v 1.18 2016/11/07 05:25:36 ozaki-r Exp $
 #
 # Copyright (c) 2015 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -36,7 +36,7 @@ IP4DST=10.0.1.2
 IP4DST_PROXYARP1=10.0.1.3
 IP4DST_PROXYARP2=10.0.1.4
 
-DEBUG=false
+DEBUG=${DEBUG:-false}
 TIMEOUT=1
 
 atf_test_case arp_cache_expiration_5s cleanup

Index: src/tests/net/arp/t_dad.sh
diff -u src/tests/net/arp/t_dad.sh:1.8 src/tests/net/arp/t_dad.sh:1.9
--- src/tests/net/arp/t_dad.sh:1.8	Wed Sep 14 16:00:10 2016
+++ src/tests/net/arp/t_dad.sh	Mon Nov  7 05:25:36 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_dad.sh,v 1.8 2016/09/14 16:00:10 christos Exp $
+#	$NetBSD: t_dad.sh,v 1.9 2016/11/07 05:25:36 ozaki-r Exp $
 #
 # Copyright (c) 2015 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -32,7 +32,7 @@ HIJACKING="env LD_PRELOAD=/usr/lib/libru
 SOCKLOCAL=unix://commsock1
 SOCKPEER=unix://commsock2
 
-DEBUG=false
+DEBUG=${DEBUG:-false}
 
 atf_test_case dad_basic cleanup
 atf_test_case dad_duplicated cleanup

Index: src/tests/net/icmp/t_icmp6_redirect.sh
diff -u src/tests/net/icmp/t_icmp6_redirect.sh:1.4 src/tests/net/icmp/t_icmp6_redirect.sh:1.5
--- src/tests/net/icmp/t_icmp6_redirect.sh:1.4	Thu Oct 20 09:51:15 2016
+++ src/tests/net/icmp/t_icmp6_redirect.sh	Mon Nov  7 05:25:36 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_icmp6_redirect.sh,v 1.4 2016/10/20 09:51:15 ozaki-r Exp $
+#	$NetBSD: t_icmp6_redirect.sh,v 1.5 2016/11/07 05:25:36 ozaki-r Exp $
 #
 # Copyright (c) 2015 Internet Initiative Japan Inc.
 # All rights reserved.
@@ -44,7 +44,7 @@ IP6IF0_GW2=fc00:1::3
 
 REDIRECT_TIMEOUT=5
 
-DEBUG=true
+DEBUG=${DEBUG:-true}
 
 get_lladdr()
 {

Index: src/tests/net/icmp/t_icmp_redirect.sh
diff -u src/tests/net/icmp/t_icmp_redirect.sh:1.3 src/tests/net/icmp/t_icmp_redirect.sh:1.4
--- src/tests/net/icmp/t_icmp_redirect.sh:1.3	Wed Aug 10 22:17:44 2016
+++ src/tests/net/icmp/t_icmp_redirect.sh	Mon Nov  7 05:25:36 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_icmp_redirect.sh,v 1.3 2016/08/10 22:17:44 kre Exp $
+#	$NetBSD: t_icmp_redirect.sh,v 1.4 2016/11/07 05:25:36 ozaki-r Exp $
 #
 # Copyright (c) 2015 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -36,7 +36,7 @@ BUS=bus1
 BUS2=bus2
 REDIRECT_TIMEOUT=5
 
-DEBUG=false
+DEBUG=${DEBUG:-false}
 
 atf_test_case icmp_redirect_timeout cleanup
 

Index: src/tests/net/if_pppoe/t_pppoe.sh
diff -u src/tests/net/if_pppoe/t_pppoe.sh:1.9 src/tests/net/if_pppoe/t_pppoe.sh:1.10
--- src/tests/net/if_pppoe/t_pppoe.sh:1.9	Thu Oct 27 09:59:17 2016
+++ src/tests/net/if_pppoe/t_pppoe.sh	Mon Nov  7 05:25:36 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_pppoe.sh,v 1.9 2016/10/27 09:59:17 knakahara Exp $
+#	$NetBSD: t_pppoe.sh,v 1.10 2016/11/07 05:25:36 ozaki-r Exp $
 #
 # Copyright (c) 2016 Internet Initiative Japan Inc.
 # All rights reserved.
@@ -42,7 +42,7 @@ SECRET=oink
 BUS=bus0
 TIMEOUT=3
 WAITTIME=5
-DEBUG=false
+DEBUG=${DEBUG:-false}
 
 setup()
 {

Index: src/tests/net/if_tap/t_tap.sh
diff -u src/tests/net/if_tap/t_tap.sh:1.3 src/tests/net/if_tap/t_tap.sh:1.4
--- src/tests/net/if_tap/t_tap.sh:1.3	Wed Aug 10 22:42:21 2016
+++ src/tests/net/if_tap/t_tap.sh	Mon Nov  7 05:25:37 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_tap.sh,v 1.3 2016/08/10 22:42:21 kre Exp $
+#	$NetBSD: t_tap.sh,v 1.4 2016/11/07 05:25:37 ozaki-r Exp $
 #
 # Copyright (c) 2016 Internet Initiative Japan Inc.
 # All rights reserved.
@@ -39,7 +39,7 @@ IP6_LOCAL=fc00::1
 IP6_TAP=fc00::2
 IP6_REMOTE=fc00::3
 
-DEBUG=false
+DEBUG=${DEBUG:-false}
 TIMEOUT=1
 
 atf_test_case tap_create_destroy cleanup

Index: src/tests/net/if_tun/t_tun.sh
diff -u src/tests/net/if_tun/t_tun.sh:1.3 src/tests/net/if_tun/t_tun.sh:1.4
--- src/tests/net/if_tun/t_tun.sh:1.3	Sat Oct  1 20:18:06 2016
+++ src/tests/net/if_tun/t_tun.sh	Mon Nov  7 05:25:37 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_tun.sh,v 1.3 2016/10/01 20:18:06 kre Exp $
+#	$NetBSD: t_tun.sh,v 1.4 2016/11/07 05:25:37 ozaki-r Exp $
 #
 # Copyright (c) 2016 Internet Initiative Japan Inc.
 # All rights reserved.
@@ -34,7 +34,7 @@ SOCK_REMOTE=unix://commsock2
 IP_LOCAL=10.0.0.1
 IP_REMOTE=10.0.0.2
 
-DEBUG=true
+DEBUG=${DEBUG:-true}
 
 atf_test_case tun_create_destroy cleanup
 tun_create_destroy_head()

Index: src/tests/net/mcast/t_mcast.sh
diff -u src/tests/net/mcast/t_mcast.sh:1.2 src/tests/net/mcast/t_mcast.sh:1.3
--- src/tests/net/mcast/t_mcast.sh:1.2	Wed Aug 10 22:45:39 2016
+++ src/tests/net/mcast/t_mcast.sh	Mon Nov  7 05:25:37 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_mcast.sh,v 1.2 2016/08/10 22:45:39 kre Exp $
+#	$NetBSD: t_mcast.sh,v 1.3 2016/11/07 05:25:37 ozaki-r Exp $
 #
 # Copyright (c) 2015 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -30,7 +30,7 @@ netserver="$netserver -lrumpnet_netinet 
 netserver="$netserver -lrumpdev"
 export RUMP_SERVER=unix://commsock
 
-DEBUG=false
+DEBUG=${DEBUG:-false}
 
 run_test()
 {

Index: src/tests/net/ndp/t_dad.sh
diff -u src/tests/net/ndp/t_dad.sh:1.8 src/tests/net/ndp/t_dad.sh:1.9
--- src/tests/net/ndp/t_dad.sh:1.8	Tue Oct  4 03:41:33 2016
+++ src/tests/net/ndp/t_dad.sh	Mon Nov  7 05:25:37 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_dad.sh,v 1.8 2016/10/04 03:41:33 ozaki-r Exp $
+#	$NetBSD: t_dad.sh,v 1.9 2016/11/07 05:25:37 ozaki-r Exp $
 #
 # Copyright (c) 2015 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -33,7 +33,7 @@ HIJACKING="env LD_PRELOAD=/usr/lib/libru
 SOCKLOCAL=unix://commsock1
 SOCKPEER=unix://commsock2
 
-DEBUG=false
+DEBUG=${DEBUG:-false}
 
 duplicated="[Dd][Uu][Pp][Ll][Ii][Cc][Aa][Tt][Ee][Dd]"
 

Index: src/tests/net/ndp/t_ndp.sh
diff -u src/tests/net/ndp/t_ndp.sh:1.13 src/tests/net/ndp/t_ndp.sh:1.14
--- src/tests/net/ndp/t_ndp.sh:1.13	Wed Aug 10 23:07:57 2016
+++ src/tests/net/ndp/t_ndp.sh	Mon Nov  7 05:25:37 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_ndp.sh,v 1.13 2016/08/10 23:07:57 kre Exp $
+#	$NetBSD: t_ndp.sh,v 1.14 2016/11/07 05:25:37 ozaki-r Exp $
 #
 # Copyright (c) 2015 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -35,7 +35,7 @@ SOCKDST=unix://commsock2
 IP6SRC=fc00::1
 IP6DST=fc00::2
 
-DEBUG=true
+DEBUG=${DEBUG:-true}
 TIMEOUT=1
 
 atf_test_case ndp_cache_expiration cleanup

Index: src/tests/net/ndp/t_ra.sh
diff -u src/tests/net/ndp/t_ra.sh:1.4 src/tests/net/ndp/t_ra.sh:1.5
--- src/tests/net/ndp/t_ra.sh:1.4	Thu Oct 20 09:51:15 2016
+++ src/tests/net/ndp/t_ra.sh	Mon Nov  7 05:25:37 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_ra.sh,v 1.4 2016/10/20 09:51:15 ozaki-r Exp $
+#	$NetBSD: t_ra.sh,v 1.5 2016/11/07 05:25:37 ozaki-r Exp $
 #
 # Copyright (c) 2015 Internet Initiative Japan Inc.
 # All rights reserved.
@@ -35,7 +35,7 @@ IP6SRV=fc00:1::1
 IP6CLI=fc00:2::2
 PIDFILE=/var/run/rump.rtadvd.pid
 CONFIG=./rtadvd.conf
-DEBUG=true
+DEBUG=${DEBUG:-true}
 
 setup_shmif0()
 {

Index: src/tests/net/net/t_forwarding.sh
diff -u src/tests/net/net/t_forwarding.sh:1.15 src/tests/net/net/t_forwarding.sh:1.16
--- src/tests/net/net/t_forwarding.sh:1.15	Wed Aug 10 21:33:52 2016
+++ src/tests/net/net/t_forwarding.sh	Mon Nov  7 05:25:37 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_forwarding.sh,v 1.15 2016/08/10 21:33:52 kre Exp $
+#	$NetBSD: t_forwarding.sh,v 1.16 2016/11/07 05:25:37 ozaki-r Exp $
 #
 # Copyright (c) 2015 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -43,7 +43,7 @@ IP6DST=fc00:0:0:2::2
 HTTPD_PID=httpd.pid
 HTML_FILE=index.html
 
-DEBUG=false
+DEBUG=${DEBUG:-false}
 TIMEOUT=5
 
 atf_test_case ipforwarding_v4 cleanup

Index: src/tests/net/net/t_ipaddress.sh
diff -u src/tests/net/net/t_ipaddress.sh:1.4 src/tests/net/net/t_ipaddress.sh:1.5
--- src/tests/net/net/t_ipaddress.sh:1.4	Tue Oct  4 03:43:15 2016
+++ src/tests/net/net/t_ipaddress.sh	Mon Nov  7 05:25:37 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_ipaddress.sh,v 1.4 2016/10/04 03:43:15 ozaki-r Exp $
+#	$NetBSD: t_ipaddress.sh,v 1.5 2016/11/07 05:25:37 ozaki-r Exp $
 #
 # Copyright (c) 2015 Internet Initiative Japan Inc.
 # All rights reserved.
@@ -30,7 +30,7 @@ SERVER6="$SERVER -lrumpnet_netinet6"
 SOCK_LOCAL=unix://commsock1
 BUS=bus
 
-DEBUG=false
+DEBUG=${DEBUG:-false}
 
 check_entry()
 {
Index: src/tests/net/net/t_ipv6_lifetime.sh
diff -u src/tests/net/net/t_ipv6_lifetime.sh:1.4 src/tests/net/net/t_ipv6_lifetime.sh:1.5
--- src/tests/net/net/t_ipv6_lifetime.sh:1.4	Sun Oct  2 15:27:32 2016
+++ src/tests/net/net/t_ipv6_lifetime.sh	Mon Nov  7 05:25:37 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_ipv6_lifetime.sh,v 1.4 2016/10/02 15:27:32 kre Exp $
+#	$NetBSD: t_ipv6_lifetime.sh,v 1.5 2016/11/07 05:25:37 ozaki-r Exp $
 #
 # Copyright (c) 2015 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -31,7 +31,7 @@ INET6SERVER="$INET6SERVER -lrumpnet_neti
 SOCK=unix://sock
 BUS=./bus
 
-DEBUG=false
+DEBUG=${DEBUG:-false}
 
 deprecated="[Dd][Ee][Pp][Rr][Ee][Cc][Aa][Tt][Ee][Dd]"
 

Index: src/tests/net/net/t_ipv6address.sh
diff -u src/tests/net/net/t_ipv6address.sh:1.9 src/tests/net/net/t_ipv6address.sh:1.10
--- src/tests/net/net/t_ipv6address.sh:1.9	Mon Oct  3 17:59:27 2016
+++ src/tests/net/net/t_ipv6address.sh	Mon Nov  7 05:25:37 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_ipv6address.sh,v 1.9 2016/10/03 17:59:27 kre Exp $
+#	$NetBSD: t_ipv6address.sh,v 1.10 2016/11/07 05:25:37 ozaki-r Exp $
 #
 # Copyright (c) 2015 Internet Initiative Japan Inc.
 # All rights reserved.
@@ -41,7 +41,7 @@ BUS2=bus2
 BUSSRC=bus_src
 BUSDST=bus_dst
 
-DEBUG=true
+DEBUG=${DEBUG:-true}
 TIMEOUT=3
 
 atf_test_case linklocal cleanup

Index: src/tests/net/net/t_mtudisc.sh
diff -u src/tests/net/net/t_mtudisc.sh:1.2 src/tests/net/net/t_mtudisc.sh:1.3
--- src/tests/net/net/t_mtudisc.sh:1.2	Thu Oct  6 02:44:48 2016
+++ src/tests/net/net/t_mtudisc.sh	Mon Nov  7 05:25:37 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_mtudisc.sh,v 1.2 2016/10/06 02:44:48 kre Exp $
+#	$NetBSD: t_mtudisc.sh,v 1.3 2016/11/07 05:25:37 ozaki-r Exp $
 #
 # Copyright (c) 2016 Internet Initiative Japan Inc.
 # All rights reserved.
@@ -36,7 +36,7 @@ SOCKREMOTE=unix://commsock3
 HTTPD_PID=httpd.pid
 HTML_FILE=index.html
 
-DEBUG=false
+DEBUG=${DEBUG:-false}
 
 atf_test_case mtudisc_basic cleanup
 
Index: src/tests/net/net/t_ping6_opts.sh
diff -u src/tests/net/net/t_ping6_opts.sh:1.2 src/tests/net/net/t_ping6_opts.sh:1.3
--- src/tests/net/net/t_ping6_opts.sh:1.2	Mon Nov  7 04:43:14 2016
+++ src/tests/net/net/t_ping6_opts.sh	Mon Nov  7 05:25:37 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_ping6_opts.sh,v 1.2 2016/11/07 04:43:14 ozaki-r Exp $
+#	$NetBSD: t_ping6_opts.sh,v 1.3 2016/11/07 05:25:37 ozaki-r Exp $
 #
 # Copyright (c) 2016 Internet Initiative Japan Inc.
 # All rights reserved.
@@ -41,7 +41,7 @@ BUS_DSTGW=bus2
 IP6SRC2=fc00:0:0:1::3
 IP6SRCGW2=fc00:0:0:1::254
 
-DEBUG=false
+DEBUG=${DEBUG:-false}
 TIMEOUT=1
 
 #

Index: src/tests/net/route/t_change.sh
diff -u src/tests/net/route/t_change.sh:1.8 src/tests/net/route/t_change.sh:1.9
--- src/tests/net/route/t_change.sh:1.8	Wed Aug 10 23:00:39 2016
+++ src/tests/net/route/t_change.sh	Mon Nov  7 05:25:37 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_change.sh,v 1.8 2016/08/10 23:00:39 roy Exp $
+#	$NetBSD: t_change.sh,v 1.9 2016/11/07 05:25:37 ozaki-r Exp $
 #
 # Copyright (c) 2011 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -30,7 +30,7 @@ netserver=\
 	-lrumpnet_netinet -lrumpnet_shmif"
 export RUMP_SERVER=unix://commsock
 
-DEBUG=false
+DEBUG=${DEBUG:-false}
 
 atf_test_case route_change_reject2blackhole cleanup
 route_change_reject2blackhole_head()
Index: src/tests/net/route/t_flags6.sh
diff -u src/tests/net/route/t_flags6.sh:1.8 src/tests/net/route/t_flags6.sh:1.9
--- src/tests/net/route/t_flags6.sh:1.8	Tue Aug 16 10:34:12 2016
+++ src/tests/net/route/t_flags6.sh	Mon Nov  7 05:25:37 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_flags6.sh,v 1.8 2016/08/16 10:34:12 roy Exp $
+#	$NetBSD: t_flags6.sh,v 1.9 2016/11/07 05:25:37 ozaki-r Exp $
 #
 # Copyright (c) 2016 Internet Initiative Japan Inc.
 # All rights reserved.
@@ -37,7 +37,7 @@ BUS2=bus2
 IP6_LOCAL=fc00::2
 IP6_PEER=fc00::1
 
-DEBUG=false
+DEBUG=${DEBUG:-false}
 
 setup_local()
 {

Index: src/tests/net/route/t_flags.sh
diff -u src/tests/net/route/t_flags.sh:1.11 src/tests/net/route/t_flags.sh:1.12
--- src/tests/net/route/t_flags.sh:1.11	Wed Aug 10 23:00:39 2016
+++ src/tests/net/route/t_flags.sh	Mon Nov  7 05:25:37 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_flags.sh,v 1.11 2016/08/10 23:00:39 roy Exp $
+#	$NetBSD: t_flags.sh,v 1.12 2016/11/07 05:25:37 ozaki-r Exp $
 #
 # Copyright (c) 2015 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -34,7 +34,7 @@ SOCK_GW=unix://commsock3
 BUS=bus1
 BUS2=bus2
 
-DEBUG=false
+DEBUG=${DEBUG:-false}
 
 setup_local()
 {

Index: src/tests/net/route/t_route.sh
diff -u src/tests/net/route/t_route.sh:1.7 src/tests/net/route/t_route.sh:1.8
--- src/tests/net/route/t_route.sh:1.7	Wed Aug 10 23:00:39 2016
+++ src/tests/net/route/t_route.sh	Mon Nov  7 05:25:37 2016
@@ -1,4 +1,4 @@
-#	$NetBSD: t_route.sh,v 1.7 2016/08/10 23:00:39 roy Exp $
+#	$NetBSD: t_route.sh,v 1.8 2016/11/07 05:25:37 ozaki-r Exp $
 #
 # Copyright (c) 2016 Internet Initiative Japan Inc.
 # All rights reserved.
@@ -49,7 +49,7 @@ IP6DST=fc00:0:0:2::2
 BUS_SRCGW=bus1
 BUS_DSTGW=bus2
 
-DEBUG=false
+DEBUG=${DEBUG:-false}
 TIMEOUT=1
 PING_OPTS="-n -c 1 -w $TIMEOUT"
 

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