False negative for traceroute submission?

[zestysoft]

I got this error for a ipv6 traceroute submission:

It looks like you submitted an IPv4 traceroute instead of an IPv6 traceroute!

Here's the traceroute:

Code Select Expand

traceroute to 2001:6f8:200:1::5:33 (2001:6f8:200:1::5:33), 30 hops max, 80 byte packets
1  mitchellandmitchell-1.tunnel.tserv29.fmt1.ipv6.he.net (2001:470:66:1c8::1)  11.024 ms  13.891 ms  16.716 ms
2  ge5-1.core1.fmt1.he.net (2001:470:0:206::1)  16.962 ms  17.024 ms  16.990 ms
3  10ge2-3.core3.fmt2.he.net (2001:470:0:2d::2)  16.955 ms  16.945 ms  16.909 ms
4  10ge9-11.core1.lax1.he.net (2001:470:0:18d::2)  50.395 ms  50.886 ms  50.613 ms
5  2001:504:0:3::4589:1 (2001:504:0:3::4589:1)  25.426 ms  25.352 ms  25.302 ms
6  2001:6f8:1:1:87:86:76:41 (2001:6f8:1:1:87:86:76:41)  25.389 ms  15.373 ms  18.556 ms
7  2001:6f8:1:1:87:86:76:43 (2001:6f8:1:1:87:86:76:43)  75.870 ms  76.052 ms  76.188 ms
8  2001:6f8:1:1:87:86:76:50 (2001:6f8:1:1:87:86:76:50)  156.510 ms  156.458 ms  156.406 ms
9  pc3.gr10.telon.uk.easynet.net (2001:7f8:4::11ed:1)  157.796 ms  154.978 ms  155.313 ms
10  2001:6f8:1:1:87:86:76:19 (2001:6f8:1:1:87:86:76:19)  151.963 ms  152.020 ms  152.093 ms
11  2001:6f8:1:1:87:86:76:22 (2001:6f8:1:1:87:86:76:22)  152.293 ms  152.346 ms  152.268 ms
12  2001:6f8:1:1:87:86:76:21 (2001:6f8:1:1:87:86:76:21)  152.302 ms  152.331 ms  152.884 ms
13  2001:6f8:1:1:87:86:76:20 (2001:6f8:1:1:87:86:76:20)  153.980 ms  154.428 ms  154.327 ms
14  pc1-646.br11.gdbru.be.easynet.net (::ffff:87.86.71.163)  154.563 ms  154.812 ms  154.436 ms
15  ge4-0-1-201.cr11.gdbru.be.easynet.net (2001:6f8:200:1::1)  155.077 ms  155.114 ms  155.335 ms
16  minx.ftp.be.easynet.net (2001:6f8:200:1::5:33)  152.537 ms  152.485 ms  152.502 ms


My guess is the ipv4 check matched for hop 14?

[divad27182]

Here's the traceroute:

Code Select Expand

14  pc1-646.br11.gdbru.be.easynet.net (::ffff:87.86.71.163)  154.563 ms  154.812 ms  154.436 ms


My guess is the ipv4 check matched for hop 14?

Yes, and it turns out if you rewrite that line as:

Code Select Expand

14  pc1-646.br11.gdbru.be.easynet.net (::ffff:5756:47a3)  154.563 ms  154.812 ms  154.436 ms

then it works.  They check the form, not the content.