[Pkg-utopia-maintainers] Bug#392813: looking at this bug..

[Joey Hess]

It would be helpful to know what version of ping you have, from which
package. Based on the strace, it doesn't look like the ping from 
iputils-ping 3:20020927-3 or the one from netkit-ping 0.10-10.3. For one
thing, it reads from /dev/urandom, which neither of those seem to do.

It also seems that you cut off the part of the strace where it reads
from /etc/nsswitch.conf and actually uses nss-mdns, which is an
unfortunate omission.

The actual failure seems to be a problem talking to the dns server that
for some reason fails with EPERM. (You were running the strace as root,
I hope?)

sendmsg(4, {msg_name(16)={sa_family=AF_INET, sin_port=htons(5353), sin_addr=inet_addr("224.0.0.251")}, msg_iov(1)=[{"\31\377\0\0\0\1\0\0\0\0\0\0\3www\6google\3com\5loca"..., 38}], msg_controllen=24, {cmsg_len=24, cmsg_level=SOL_IP, cmsg_type=, ...}, msg_flags=0}, MSG_DONTROUTE) = -1 EPERM (Operation not permitted)

Here's the corresponding query from my machine. Note that both
iputils-ping and netkit-ping look like this, and note that it's using
different syscalls than the ping in your strace:

send(4, "\263H\1\0\0\1\0\0\0\0\0\0\3www\6google\3com\0\0\1\0\1", 32, 0) = 32
poll([{fd=4, events=POLLIN, revents=POLLIN}], 1, 5000) = 1
ioctl(4, FIONREAD, [94])                = 0
recvfrom(4, "\263H\201\200\0\1\0\3\0\0\0\0\3www\6google\3com\0\0\1\0"..., 1024,  0, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("192.168.1.1")}, [ 16]) = 94

-- 
see shy jo
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