netdev - Re: ping -I eth1 ....

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Message-ID: <1288964206.2882.402.camel@edumazet-laptop>
Date:	Fri, 05 Nov 2010 14:36:46 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Joakim Tjernlund <joakim.tjernlund@...nsmode.se>
Cc:	netdev@...r.kernel.org
Subject: Re: ping -I eth1 ....

Le vendredi 05 novembre 2010 à 14:14 +0100, Joakim Tjernlund a écrit :
> If I do busybox ping -I eth1 x.x.y.y i see
> socket(PF_INET, SOCK_RAW, IPPROTO_ICMP) = 3
> getuid()                                = 0
> setuid(0)                               = 0
> setsockopt(3, SOL_SOCKET, SO_BINDTODEVICE, "eth1\0\0\0\0\0\0\0\0\0\0\0\0\20\0[l\0\0\0\2\20\7\354(\0"..., 32) = 0
> setsockopt(3, SOL_SOCKET, SO_BROADCAST, [1], 4) = 0
> setsockopt(3, SOL_SOCKET, SO_RCVBUF, [7280], 4) = 0
> 
> ......
> then this in a loop:
> --- SIGALRM (Alarm clock) @ 0 (0) ---
> clock_gettime(CLOCK_MONOTONIC, {1238, 116470107}) = 0
> sendto(3, "\10\0\203\345\1\326\0\2I\314(v\0\0\0\0\0\0\0\0\0\0\0\0"..., 64, 0, {sa_family=AF_INET, sin_port=htons(0), sin_addr=inet_addr("1.1.1.1")}, 16) = 64
> rt_sigaction(SIGALRM, {0x10017034, [ALRM], SA_RESTART}, {0x10017034, [ALRM], SA_RESTART}, 8) = 0
> alarm(1)                                = 0
> sigreturn()                             = ? (mask now [ILL ABRT FPE KILL ALRM STKFLT CONT STOP TTOU URG XCPU XFSZ VTALRM PROF WINCH IO PWR RTMIN])
> recvfrom(3, 0xbfe6a620, 192, 0, 0xbfe6a6f0, 0xbfe6a70c) = ? ERESTARTSYS (To be restarted)
> 
> Then I do ifconfig eth1 down
> and I still see the same. Should not
> sendto and/or revcfrom return some error as
> the interface is down?

Hmm, this reminds me one patch, yes...

Search for " ipv4: remove all rt cache entries on UNREGISTER event"

http://permalink.gmane.org/gmane.linux.network/173391

I guess I should respin it for net-next-2.6



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