Package: wide-dhcpv6-client
Version: 20080615-8
Severity: wishlist
Tags: patch
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Hash: SHA1
Hello,
I am using dhcp6c for prefix delegation, and wanted to configure lo with a
user friendly, "nice looking" address. However, using this config:
id-assoc pd {
prefix-interface lo {
sla-id 0;
};
...
};
got me:
Aug/05/2010 21:10:59: update_prefix: create a prefix 2001:4620:9::/48
pltime=600, vltime=12884902488
Aug/05/2010 21:10:59: ifaddrconf: add an address
2001:4620:9:0:200:ff:fe00:0/64 on lo
In addition to being as butt ugly as any other EUI-64 address, this is also
plain wrong. The client has obviously used 00:00:00:00:00:00 as a macaddress
for lo. Not good.
Well, I haven't fixed that, but I did create a patch to allow configuring
an ifid instead of auto generating it. With that, using this config:
id-assoc pd {
prefix-interface lo {
sla-id 0;
ifid 1;
};
...
};
I got:
Aug/05/2010 21:11:36: update_prefix: create a prefix 2001:4620:9::/48
pltime=30064771672, vltime=140338056397400
Aug/05/2010 21:11:36: ifaddrconf: add an address 2001:4620:9::1/64 on lo
which of course looks much nicer. The patch is rather primitive, but it is a
start. Do you think it could be added to the Debian package? Upstream does
not seem to be active anymore.
Bjørn
- -- System Information:
Debian Release: squeeze/sid
APT prefers stable
APT policy: (700, 'stable'), (650, 'testing'), (600, 'unstable'), (1,
'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.32-5-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages wide-dhcpv6-client depends on:
ii debconf [debconf-2.0] 1.5.24 Debian configuration management sy
ii libc6 2.11.2-2 Embedded GNU C Library: Shared lib
ii lsb-base 3.2-20 Linux Standard Base 3.2 init scrip
ii sharutils 1:4.6.3-1 shar, unshar, uuencode, uudecode
wide-dhcpv6-client recommends no packages.
wide-dhcpv6-client suggests no packages.
- -- debconf information:
* wide-dhcpv6-client/config_warn:
* wide-dhcpv6-client/interfaces:
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Adding ifid option to the dhcp6c.conf prefix-interface statement
This adds the ability to override the default EUI-64 address selection.
Useful for interfaces without a unique hardware address, or for creating
more userfriendly addresses in general.
Signed-off-by: Bjørn Mork <[email protected]>
---
cfparse.y | 10 +++++++++-
cftoken.l | 1 +
config.c | 5 +++++
config.h | 2 +-
dhcp6c.conf.5 | 10 ++++++++++
5 files changed, 26 insertions(+), 2 deletions(-)
--- wide-dhcpv6-20080615.orig/config.c
+++ wide-dhcpv6-20080615/config.c
@@ -471,6 +471,7 @@ add_pd_pif(iapdc, cfl0)
{
struct cf_list *cfl;
struct prefix_ifconf *pif;
+ int i;
/* duplication check */
for (pif = TAILQ_FIRST(&iapdc->iapd_pif_list); pif;
@@ -524,6 +525,10 @@ add_pd_pif(iapdc, cfl0)
goto bad;
}
break;
+ case IFPARAM_IFID:
+ for (i = sizeof(pif->ifid) -1; i >= 0; i--)
+ pif->ifid[i] = (cfl->num >>
8*(sizeof(pif->ifid) - 1 - i)) & 0xff;
+ break;
default:
debug_printf(LOG_ERR, FNAME, "%s:%d internal error: "
"invalid configuration",
--- wide-dhcpv6-20080615.orig/cfparse.y
+++ wide-dhcpv6-20080615/cfparse.y
@@ -104,7 +104,7 @@ static void cleanup_cflist __P((struct c
%token INTERFACE IFNAME
%token PROFILE PROFILENAME
-%token PREFIX_INTERFACE SLA_ID SLA_LEN DUID_ID
+%token PREFIX_INTERFACE SLA_ID SLA_LEN IFID DUID_ID
%token ID_ASSOC IA_PD IAID IA_NA
%token ADDRESS
%token REQUEST SEND ALLOW PREFERENCE
@@ -1056,6 +1056,14 @@ ifparam:
l->num = $2;
$$ = l;
}
+ | IFID NUMBER EOS
+ {
+ struct cf_list *l;
+
+ MAKE_CFLIST(l, IFPARAM_IFID, NULL, NULL);
+ l->num = (u_int64_t)$2;
+ $$ = l;
+ }
;
ianaconf_list:
--- wide-dhcpv6-20080615.orig/config.h
+++ wide-dhcpv6-20080615/config.h
@@ -266,7 +266,7 @@ enum { DECL_SEND, DECL_ALLOW, DECL_INFO_
DECL_PREFIX, DECL_PREFERENCE, DECL_SCRIPT, DECL_DELAYEDKEY,
DECL_ADDRESS,
DECL_RANGE, DECL_ADDRESSPOOL,
- IFPARAM_SLA_ID, IFPARAM_SLA_LEN,
+ IFPARAM_SLA_ID, IFPARAM_SLA_LEN, IFPARAM_IFID,
DHCPOPT_RAPID_COMMIT, DHCPOPT_AUTHINFO,
DHCPOPT_DNS, DHCPOPT_DNSNAME,
DHCPOPT_IA_PD, DHCPOPT_IA_NA, DHCPOPT_NTP,
--- wide-dhcpv6-20080615.orig/dhcp6c.conf.5
+++ wide-dhcpv6-20080615/dhcp6c.conf.5
@@ -443,6 +443,16 @@ This statement specifies the length of t
must be a decimal number between 0 and 128.
If the length is not specified by this statement,
the default value 16 will be used.
+.It Xo
+.Ic ifid Ar ID
+;
+.Xc
+This statement specifies the interface id.
+.Ar ID
+must be a decimal integer. It will be combined with the delegated
+prefix and the sla-id to form a complete interface address. The
+default is to use the EUI-64 address of the
+.Ar interface .
.El
.El
.\"
--- wide-dhcpv6-20080615.orig/cftoken.l
+++ wide-dhcpv6-20080615/cftoken.l
@@ -240,6 +240,7 @@ ecl \}
<S_CNF>prefix-interface { DECHO; BEGIN S_IFACE; return (PREFIX_INTERFACE); }
<S_CNF>sla-id { DECHO; return (SLA_ID); }
<S_CNF>sla-len { DECHO; return (SLA_LEN); }
+<S_CNF>ifid { DECHO; return (IFID); }
/* duration */
<S_CNF>infinity { DECHO; return (INFINITY); }
