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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

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



--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html