From mboxrd@z Thu Jan  1 00:00:00 1970
From: arisawa <arisawa@ar.aichi-u.ac.jp>
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Message-Id: <4AE7714E-C18F-4897-ACC1-4F8D35C858AE@ar.aichi-u.ac.jp>
Date: Mon, 28 Dec 2015 18:04:34 +0900
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
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Subject: [9fans] bug or feature ?  --- ip/ping -6
Topicbox-Message-UUID: 7af3e5e2-ead9-11e9-9d60-3106f5b1d025

hello 9fans,

I have once posted the message below to 9front mailing list.
however looking the origin of the problem, now I think better place is =
9fans.

=3D=3D message posted to 9front mailing list =3D=3D

I am feeling weird that ip/ping -6 does not ping to ipv6 address with =
/lib/ndb/local.

#	sys=3Dio
#		ip=3D192.168.0.5
#		ip=3D2402:6b00:22cd:bf80::5
#
hebe% ip/ping -6a io
sending 32 64 byte messages 1000 ms apart to icmpv6!io!1
	2402:6b00:22cd:bf80::6 -> 192.168.0.5
0: 192.168.0.5 -> 192.168.0.6 rtt 104 =C2=B5s, avg rtt 104 =C2=B5s, ttl =
=3D 255
1: 192.168.0.5 -> 192.168.0.6 rtt 85 =C2=B5s, avg rtt 94 =C2=B5s, ttl =3D =
255
2: 192.168.0.5 -> 192.168.0.6 rtt 85 =C2=B5s, avg rtt 91 =C2=B5s, ttl =3D =
255
3: 192.168.0.5 -> 192.168.0.6 rtt 85 =C2=B5s, avg rtt 89 =C2=B5s, ttl =3D =
255

this weirdness comes from the order of ip attributes.

#	sys=3Dio
#		ip=3D2402:6b00:22cd:bf80::5
#		ip=3D192.168.0.5
#
hebe% ip/ping -6a io
sending 32 64 byte messages 1000 ms apart to icmpv6!io!1
	2402:6b00:22cd:bf80::6 -> 2402:6b00:22cd:bf80::5
0: 2402:6b00:22cd:bf80::5 -> 2402:6b00:22cd:bf80::6 rtt 102 =C2=B5s, avg =
rtt 102 =C2=B5s, ttl =3D 255
1: 2402:6b00:22cd:bf80::5 -> 2402:6b00:22cd:bf80::6 rtt 88 =C2=B5s, avg =
rtt 95 =C2=B5s, ttl =3D 255
2: 2402:6b00:22cd:bf80::5 -> 2402:6b00:22cd:bf80::6 rtt 84 =C2=B5s, avg =
rtt 91 =C2=B5s, ttl =3D 255
3: 2402:6b00:22cd:bf80::5 -> 2402:6b00:22cd:bf80::6 rtt 104 =C2=B5s, avg =
rtt 94 =C2=B5s, ttl =3D 255

is this a feature or a bug?

Kenji Arisawa=