The script uses hardcoded 'eth0' which used to work on most systems.
This fix tries to find a 'working' network interface using the hostname.

Signed-off-by: Simon Xu <xu.si...@oracle.com>
---
 testcases/network/iproute/ip_tests.sh | 50 +++++++++++++++++++----------------
 1 file changed, 27 insertions(+), 23 deletions(-)

diff --git a/testcases/network/iproute/ip_tests.sh 
b/testcases/network/iproute/ip_tests.sh
index ed20540..4bba243 100755
--- a/testcases/network/iproute/ip_tests.sh
+++ b/testcases/network/iproute/ip_tests.sh
@@ -38,7 +38,7 @@ set +x
 # Description: - Check if command ip is available.
 #               - Check if command ifconfig is available.
 #               - check if command awk is available.
-#               - alias eth0 to eth0:1 with IP 10.1.1.12
+#               - alias $INF to $INF:1 with IP 10.1.1.12
 #
 # Return               - zero on success
 #               - non zero on failure. return value from commands ($RC)
@@ -46,7 +46,7 @@ init()
 {
 
        export TST_TOTAL=2                      # total numner of tests in this 
file.
-       export TCID="ip_tests  "                # this is the init function.
+       export TCID="ip_tests"                  # this is the init function.
        export TST_COUNT=0                      # init identifier,
 
        if [ -z $TMP ]
@@ -107,22 +107,26 @@ init()
 
        tst_resm TINFO "INIT: Inititalizing tests."
 
-       # Aliasing eth0 to create private network.
-       /sbin/ifconfig eth0:1 10.1.1.12 >$LTPTMP/tst_ip.err 2>&1
+       # Get network interface.
+       IP=$(dig +short $(hostname))
+       INF=$(ifconfig|grep -B1 $IP|head -1|sed 's/:.*//')
+
+       # Aliasing $INF to create private network.
+       /sbin/ifconfig $INF:1 10.1.1.12 >$LTPTMP/tst_ip.err 2>&1
        RC=$?
        if [ $RC -ne 0 ]
        then
-               tst_brk TBROK NULL NULL "INIT: failed aliasing eth0:1 with IP 
10.1.1.12"
+               tst_brk TBROK NULL NULL "INIT: failed aliasing $INF:1 with IP 
10.1.1.12"
                return $RC
        else
-               /sbin/route add -host 10.1.1.12 dev eth0:1 >$LTPTMP/tst_ip.err 
2>&1
+               /sbin/route add -host 10.1.1.12 dev $INF:1 >$LTPTMP/tst_ip.err 
2>&1
                RC=$?
                if [ $RC -ne 0 ]
                then
                        tst_brk TBROK NULL NULL "INIT: failed adding route to 
10.1.1.12"
                        return $RC
                else
-                       tst_resm TINFO "INIT: added alias: `ifconfig eth0:1`"
+                       tst_resm TINFO "INIT: added alias: `ifconfig $INF:1`"
                fi
        fi
 
@@ -148,7 +152,7 @@ init()
 # Function:            cleanup
 #
 # Description  - remove temporary files and directories.
-#               - remove alias to eth0
+#               - remove alias to $INF
 #
 # Return               - zero on success
 #               - non zero on failure. return value from commands ($RC)
@@ -157,11 +161,11 @@ cleanup()
        TCID=dhcpd
        TST_COUNT=0
 
-       /sbin/ifconfig eth0:1 >$LTPTMP/tst_ip.err 2>&1
+       /sbin/ifconfig $INF:1 >$LTPTMP/tst_ip.err 2>&1
        RC=$?
        if [ $RC -eq 0 ]
        then
-               /sbin/ifconfig eth0:1 down >$LTPTMP/tst_ip.err 2>&1
+               /sbin/ifconfig $INF:1 down >$LTPTMP/tst_ip.err 2>&1
        fi
 
        rm -fr $LTPTMP
@@ -189,11 +193,11 @@ test01()
        tst_resm TINFO \
         "Test #1: ip link set DEVICE mtu MTU changes the device mtu size"
 
-       tst_resm TINFO "Test #1: changing mtu size of eth0:1 device."
+       tst_resm TINFO "Test #1: changing mtu size of $INF:1 device."
 
        MTUSZ_BAK=`ifconfig eth0:1 | grep -i MTU | sed "s/^.*MTU://" \
                | awk '{print $1}'`
-       ip link set eth0:1 mtu 300 >$LTPTMP/tst_ip.err 2>&1
+       ip link set $INF:1 mtu 300 >$LTPTMP/tst_ip.err 2>&1
        if [ $RC -ne 0 ]
        then
                tst_res TFAIL $LTPTMP/tst_ip.err \
@@ -204,7 +208,7 @@ test01()
                if [ $MTUSZ -eq 300 ]
                then
                        tst_resm TPASS "Test #1: changing mtu size success"
-                       ip link set eth0:1 mtu $MTUSZ_BAK \
+                       ip link set $INF:1 mtu $MTUSZ_BAK \
                                >$LTPTMP/tst_ip.err 2>&1
                else
                        tst_resm FAIL NULL \
@@ -256,7 +260,7 @@ test02()
                return $RC
        else
                tst_resm TPASS \
-                       "Test #2: Listed eth0:1 and returned correct attributes"
+                       "Test #2: Listed $INF:1 and returned correct attributes"
        fi
        return $RC
 }
@@ -365,7 +369,7 @@ test04()
                return $RC
        else
                tst_resm TINFO \
-                "Test #4: ip neigh show - shows all neighbour entries in arp 
tables."
+                       "Test #4: ip neigh show - shows all neighbour entries 
in arp tables."
 
                cat > $LTPTMP/tst_ip.exp <<-EOF
                127.0.0.1 dev lo lladdr 00:00:00:00:00:00 REACHABLE
@@ -443,14 +447,14 @@ test05()
 
 
        tst_resm TINFO \
-        "Test #5: create an interface with inet 10.6.6.6 alias to eth0"
+        "Test #5: create an interface with inet 10.6.6.6 alias to $INF"
 
-       ifconfig eth0:1 10.6.6.6 netmask 255.255.255.0 >$LTPTMP/tst_ip.err 2>&1
+       ifconfig $INF:1 10.6.6.6 netmask 255.255.255.0 >$LTPTMP/tst_ip.err 2>&1
        RC=$?
        if [ $RC -ne 0 ]
        then
                tst_brk TBROK $LTPTMP/tst_ip.err NULL \
-                       "Test #5: unable to create interface eth0:1 inet 
10.6.6.6. Reason:"
+                       "Test #5: unable to create interface $INF:1 inet 
10.6.6.6. Reason:"
                return $RC
        fi
 
@@ -541,16 +545,16 @@ test06()
        tst_resm TINFO \
         "Test #6: ip maddr add - adds a new multicast addr"
 
-       ifconfig eth0:1 10.6.6.6 netmask 255.255.255.0 >$LTPTMP/tst_ip.err 2>&1
+       ifconfig $INF:1 10.6.6.6 netmask 255.255.255.0 >$LTPTMP/tst_ip.err 2>&1
        RC=$?
        if [ $RC -ne 0 ]
        then
                tst_brk TBROK $LTPTMP/tst_ip.err NULL \
-                       "Test #6: unable to create interface eth0:1 inet 
10.6.6.6. Reason:"
+                       "Test #6: unable to create interface $INF:1 inet 
10.6.6.6. Reason:"
                return $RC
        fi
 
-       ip maddr add 66:66:00:00:00:66 dev eth0:1 >$LTPTMP/tst_ip.err 2>&1
+       ip maddr add 66:66:00:00:00:66 dev $INF:1 >$LTPTMP/tst_ip.err 2>&1
        RC=$?
        if [ $RC -ne 0 ]
        then
@@ -579,7 +583,7 @@ test06()
                        if [ $RC -ne 0 ]
                        then
                                tst_res FAIL $LTPTMP/tst_ip.err \
-                                       "Test #6: multicast addr not added to 
eth0:1. Details:"
+                                       "Test #6: multicast addr not added to 
$INF:1. Details:"
                                return $RC
                        fi
                fi
@@ -587,7 +591,7 @@ test06()
                tst_resm TINFO \
                 "Test #6: ip maddr del - deletes multicast addr."
 
-               ip maddr del 66:66:00:00:00:66 dev eth0:1 >$LTPTMP/tst_ip.err 
2>&1
+               ip maddr del 66:66:00:00:00:66 dev $INF:1 >$LTPTMP/tst_ip.err 
2>&1
                RC=$?
                if [ $RC -ne 0 ]
                then
-- 
1.9.1


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