Date: Thu, 1 Aug 2024 11:24:54 -0400 From: Chris Ross <cross+freebsd@distal.com> To: Roy Marples <roy@marples.name> Cc: freebsd-net <freebsd-net@freebsd.org> Subject: =?utf-8?Q?Re=3A_=C2=A0DHCPv6_IA=5FPD_-_how-to?= Message-ID: <B075D9DF-EAA0-4BD8-B1D7-37F8E2EE3A0F@distal.com> In-Reply-To: <190e3ccbd5b.da3f3460134031.7068469154065557677@marples.name> References: <CA0C0E7D-4956-4DB4-A274-D74C84A18529@distal.com> <190e09e6c1a.11450232913849.654798645277119294@marples.name> <050440F8-B3D8-4B2C-85BD-D5C09C303037@distal.com> <190e3ccbd5b.da3f3460134031.7068469154065557677@marples.name>
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[Long message, apologies. Thoughts mostly after the log output.]
> On Jul 24, 2024, at 04:12, Roy Marples <roy@marples.name> wrote:
> dhcpcd can indeed setup the internal networks within the PD for you.
> If my answer to Kar's question is not enough, then please let me know.
Alright. Time passes, and I have a new system (FreeBSD 14.1) reach to
slot in in place of my old router (FreeBSD 11.4). With Roy=E2=80=99s =
help
off-list, I have a config that I think will work:
duid
persistent
vendorclassid
option classless_static_routes
option rapid_commit
require dhcp_server_identifier
slaac private
noipv6rs
interface vlan0
ipv6only
noipv4
noipv4ll
ia_pd 0/::/56 vlan1/32 vlan2/42 vlan3/52 vlan4/62 vlan5/72 vlan6/82 =
vlan7/92
I brought the system up as an IPv4 router with no IPv6 configured,
then ran =E2=80=9Cdhcpcd --noconfigure -d -B=E2=80=9D. Output is long, =
but select
bits (including top and bottom) show:
=E2=80=94=E2=80=948<=E2=80=94=E2=80=948<=E2=80=94=E2=80=948<=E2=80=94=E2=80=
=948<----
main: control_open: Connection refused
dhcpcd-10.0.8 starting
spawned privileged proxy on PID 43738
spawned network proxy on PID 43930
spawned controller proxy on PID 44915
DUID 00:01:00:01:2e:3e:5e:7f:a4:53:0e:79:b9:82
sandbox unavailable: capsicum
lo0: ignoring due to interface type and no config
pflog0: unsupported interface type 0xf6
ix0: executing: /usr/local/libexec/dhcpcd-run-hooks PREINIT
ix0: executing: /usr/local/libexec/dhcpcd-run-hooks CARRIER
ix1: executing: /usr/local/libexec/dhcpcd-run-hooks PREINIT
vlan0: executing: /usr/local/libexec/dhcpcd-run-hooks PREINIT
vlan0: executing: /usr/local/libexec/dhcpcd-run-hooks CARRIER
vlan1: executing: /usr/local/libexec/dhcpcd-run-hooks PREINIT
vlan1: executing: /usr/local/libexec/dhcpcd-run-hooks CARRIER
vlan2: executing: /usr/local/libexec/dhcpcd-run-hooks PREINIT
vlan2: executing: /usr/local/libexec/dhcpcd-run-hooks CARRIER
vlan3: executing: /usr/local/libexec/dhcpcd-run-hooks PREINIT
[=E2=80=A6]
vlan0: IAID ff:00:00:06
vlan0: IA type 25 IAID 00:00:00:00
vlan0: reading lease: /var/db/dhcpcd/vlan0.lease6
vlan0: rebinding prior DHCPv6 lease
vlan0: delaying REBIND6 (xid 0x329d93), next in 1.0 seconds
vlan0: multicasting REBIND6 (xid 0x329d93), next in 1.1 seconds
vlan0: REPLY6 received from fe80::3e8a:b0ff:fe3e:4dce
vlan0: renew in 3600, rebind in 5760, expire in 7200 seconds
vlan0: writing lease: /var/db/dhcpcd/vlan0.lease6
vlan0: executing: /usr/local/libexec/dhcpcd-run-hooks REBIND6
[=E2=80=A6]
vlan6: executing: /usr/local/libexec/dhcpcd-run-hooks BOUND
vlan5: DAD completed for 192.168.123.46
vlan5: leased 192.168.123.46 for 3105 seconds
vlan5: renew in 1552 seconds, rebind in 2716 seconds
vlan5: writing lease: /var/db/dhcpcd/vlan5.lease
vlan5: executing: /usr/local/libexec/dhcpcd-run-hooks BOUND
vlan2: DAD completed for 172.31.83.42
vlan2: leased 172.31.83.42 for 755 seconds
vlan2: renew in 377 seconds, rebind in 660 seconds
vlan2: writing lease: /var/db/dhcpcd/vlan2.lease
vlan2: executing: /usr/local/libexec/dhcpcd-run-hooks BOUND
ix0: ARP probing 169.254.156.162 (2 of 3), next in 1.8 seconds
ix1: ARP probing 169.254.188.53 (2 of 3), next in 1.7 seconds
ps_bpf_recvmsg: Network is down
vlan1: ARP probing 169.254.156.162 (3 of 3), next in 2.0 seconds
ix0: ARP probing 169.254.156.162 (3 of 3), next in 2.0 seconds
ix1: ARP probing 169.254.188.53 (3 of 3), next in 2.0 seconds
ps_bpf_recvmsg: Network is down
vlan1: using IPv4LL address 169.254.156.162
zsh: segmvlan3ation fault sudo dhcpcd --noconfigure -d -B
=E2=80=94=E2=80=94=E2=80=948<=E2=80=94=E2=80=94=E2=80=948<=E2=80=94-=E2=80=
=948<----
I=E2=80=99m sure there are =E2=80=9Cstupid user tricks=E2=80=9D here. I =
think the
primary problem is that it=E2=80=99s using more than the one interface
I want it to. It also looks like it=E2=80=99s picking up IPv4 addresses
from the local ISC dhcpd on all of the other interfaces. I=E2=80=99m
glad it wasn=E2=80=99t trying to configure them!
Then, of course, the SEGV. So, first I guess I need to tell
it to not try interfaces other than the one I want. For my
case. However there are a few things I think may want to
be worked on:
1. The SEGV, obviously
2. It seems to be trying things on ix1, despite no carrier.
I understand keeping an eye on it, but not sending DISCOVER
and ARP et al.
3. It seems it shouldn=E2=80=99t accept a DHCP address from it=E2=80=99s
local address. I question if it should try to _get_ an
address if there=E2=80=99s already an address, but. Maybe this
is a dhcpd problem, where it shouldn=E2=80=99t respond to requests
from the local address?
Thanks all, sorry for the long message.
- Chris
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