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Re: kern/52554: IPv6 connections not routing to default gateway
The following reply was made to PR kern/52554; it has been noted by GNATS.
From: Roy Bixler <rcbixler%nyx.net@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: ozaki-r%NetBSD.org@localhost, gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Subject: Re: kern/52554: IPv6 connections not routing to default gateway
Date: Tue, 26 Sep 2017 07:53:14 -0600
On Tue, Sep 26, 2017 at 02:40:01AM +0000, Ryota Ozaki wrote:
> The following reply was made to PR kern/52554; it has been noted by GNATS.
>
> From: Ryota Ozaki <ozaki-r%netbsd.org@localhost>
> To: rcbixler%nyx.net@localhost
> Cc: "gnats-bugs%NetBSD.org@localhost" <gnats-bugs%netbsd.org@localhost>, kern-bug-people%netbsd.org@localhost,
> gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
> Subject: Re: kern/52554: IPv6 connections not routing to default gateway
> Date: Tue, 26 Sep 2017 11:34:49 +0900
>
> Can you show me
> - netstat -nr -f inet6
> - ifconfig
> on both NetBSD 7.1 and NetBSD 8?
>
> Thanks,
> ozaki-r
Here you are. Note that the default gateways are different -- this is
because of the "multiple default IPv6 routers with equal weights"
architecture.
NetBSD 7.1
wm0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
capabilities=2bf80<TSO4,IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx>
capabilities=2bf80<TCP4CSUM_Tx,UDP4CSUM_Rx,UDP4CSUM_Tx,TCP6CSUM_Tx>
capabilities=2bf80<UDP6CSUM_Tx>
enabled=0
ec_capabilities=7<VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU>
ec_enabled=0
address: 52:54:00:12:34:57
media: Ethernet autoselect (1000baseT full-duplex)
status: active
inet 10.217.128.49 netmask 0xfffff800 broadcast 10.217.135.255
inet6 fe80::5054:ff:fe12:3457%wm0 prefixlen 64 scopeid 0x1
inet6 2620:105:c000:3:9ae2:df9b:70eb:1894 prefixlen 64
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 33648
inet 127.0.0.1 netmask 0xff000000
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2
Routing tables
Internet6:
Destination Gateway Flags Refs Use Mtu Interface
::/104 ::1 UGRS - - - lo0
::/96 ::1 UGRS - - - lo0
default fe80::ec4:7aff:feda:2df3 UGS - - - wm0
::1 ::1 UH - - 33648 lo0
::127.0.0.0/104 ::1 UGRS - - - lo0
::224.0.0.0/100 ::1 UGRS - - - lo0
::255.0.0.0/104 ::1 UGRS - - - lo0
::ffff:0.0.0.0/96 ::1 UGRS - - - lo0
2001:db8::/32 ::1 UGRS - - - lo0
2002::/24 ::1 UGRS - - - lo0
2002:7f00::/24 ::1 UGRS - - - lo0
2002:e000::/20 ::1 UGRS - - - lo0
2002:ff00::/24 ::1 UGRS - - - lo0
2620:105:c000:3::/64 link#1 UC - - - wm0
2620:105:c000:3:9ae2:df9b:70eb:1894 52:54:00:12:34:57 UHL - - - lo0
fe80::/10 ::1 UGRS - - - lo0
fe80::%wm0/64 link#1 UC - - - wm0
fe80::ec4:7aff:feda:2d5b link#1 UHLc - - - wm0
fe80::ec4:7aff:feda:2df3 0c:c4:7a:da:2d:f3 UHLc - - - wm0
fe80::ec4:7aff:feda:2e47 link#1 UHLc - - - wm0
fe80::5054:ff:fe12:3457 52:54:00:12:34:57 UHL - - - lo0
fe80::%lo0/64 fe80::1 U - - - lo0
fe80::1 link#2 UHL - - - lo0
ff01:1::/32 link#1 UC - - - wm0
ff01:2::/32 ::1 UC - - - lo0
ff02::%wm0/32 link#1 UC - - - wm0
ff02::%lo0/32 ::1 UC - - - lo0
NetBSD 8_BETA (GENERIC.201709141550Z)
lo0: flags=0x8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 33624
inet 127.0.0.1/8 flags 0x0
inet6 ::1/128 flags 0x20<NODAD>
inet6 fe80::1%lo0/64 flags 0x0 scopeid 0x1
wm0: flags=0x8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
capabilities=2bf80<TSO4,IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx>
capabilities=2bf80<TCP4CSUM_Tx,UDP4CSUM_Rx,UDP4CSUM_Tx,TCP6CSUM_Tx>
capabilities=2bf80<UDP6CSUM_Tx>
enabled=0
ec_capabilities=7<VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU>
ec_enabled=0
address: 52:54:00:12:34:57
media: Ethernet autoselect (1000baseT full-duplex)
status: active
inet 10.217.128.44/21 broadcast 10.217.135.255 flags 0x0
inet6 fe80::5054:ff:fe12:3457%wm0/64 flags 0x0 scopeid 0x2
inet6 2620:105:c000:3:58a4:a8c:71ce:44f9/64 flags 0x0
Routing tables
Internet6:
Destination Gateway Flags Refs Use Mtu Interface
::/104 ::1 UGRS - - 33624 lo0
::/96 ::1 UGRS - - 33624 lo0
default fe80::ec4:7aff:feda:2e47 UGS - - - wm0
::1 lo0 UHl - - 33624 lo0
::127.0.0.0/104 ::1 UGRS - - 33624 lo0
::224.0.0.0/100 ::1 UGRS - - 33624 lo0
::255.0.0.0/104 ::1 UGRS - - 33624 lo0
::ffff:0.0.0.0/96 ::1 UGRS - - 33624 lo0
2001:db8::/32 ::1 UGRS - - 33624 lo0
2002::/24 ::1 UGRS - - 33624 lo0
2002:7f00::/24 ::1 UGRS - - 33624 lo0
2002:e000::/20 ::1 UGRS - - 33624 lo0
2002:ff00::/24 ::1 UGRS - - 33624 lo0
2620:105:c000:3::/64 link#2 UC - - - wm0
2620:105:c000:3:58a4:a8c:71ce:44f9 link#2 UHl - - - lo0
fe80::/10 ::1 UGRS - - 33624 lo0
fe80::%lo0/64 fe80::1 U - - - lo0
fe80::1 lo0 UHl - - - lo0
fe80::%wm0/64 link#2 UC - - - wm0
fe80::5054:ff:fe12:3457 link#2 UHl - - - lo0
ff01:1::/32 ::1 UC - - 33624 lo0
ff01:2::/32 link#2 UC - - - wm0
ff02::%lo0/32 ::1 UC - - 33624 lo0
ff02::%wm0/32 link#2 UC - - - wm0
fe80::ec4:7aff:feda:2e47 0c:c4:7a:da:2e:47 UHL - - - wm0
--
Roy Bixler <rcbixler%nyx.net@localhost>
"The fundamental principle of science, the definition almost, is this: the
sole test of the validity of any idea is experiment."
-- Richard P. Feynman
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