Re: [PATCH] ipv4: fix fib metrics

Eric Dumazet
2011-03-24T22:19:06Z

Le jeudi 24 mars 2011 à 23:11 +0100, Alessandro Suardi a écrit :

> On a -git14 kernel + both the fib metrics and the above git diff, I
> strace'd vpnc
> and found out this (first triplet of public IP masked intentionally)
>
> [root@duff tmp]# egrep 'execve|garbage' strace.log |egrep '/ip|garbage'
> [pid 4228] execve("/sbin/ip", ["/sbin/ip", "route", "get",
> "xxx.9.13.212"], [/* 32 vars */]) = 0
> [pid 4231] execve("/sbin/ip", ["/sbin/ip", "route", "replace",
> "10.175.0.0/19", "dev", "tun0"], [/* 32 vars */]) = 0
> [pid 4232] execve("/sbin/ip", ["/sbin/ip", "route", "flush",
> "cache"], [/* 32 vars */]) = 0
> [pid 4234] execve("/sbin/ip", ["/sbin/ip", "route", "get",
> "xxx.9.13.212"], [/* 32 vars */]) = 0
> [pid 4237] execve("/sbin/ip", ["/sbin/ip", "route", "add",
> "xxx.9.13.212", "via", "192.168.1.1", "dev", "eth1", "src",
> "192.168.1.8", "ipid", "0x043f", "advmss", "1400"], [/* 32 vars */]) =
> 0
> [pid 4237] write(2, "Error: either \"to\" is duplicate,"..., 57Error:
> either "to" is duplicate, or "ipid" is a garbage.
>
> 192.168.1.1 is my DSL router and 192.168.1.8 is my computer's wireless IP.
>
> Does this ring any bell ?
>
>

Not a kernel error, but a tool error ?

(ipid is only displayed by "ip ro show")

grep ipid */*.c
ip/iproute.c: fprintf(fp, " ipid 0x%04x", ci->rta_id);