There is a flag IPV6_FORCE_ACCEPT_RA[1] that can be set on an interface to accept_ra's while keeping autoconf (slaac) disabled. I wonder if that's what should be enabled for dhcp interfaces not IPV6_AUTOCONF which also set the autocnf sysctl.
accept_ra - INTEGER
Accept Router Advertisements; autoconfigure using them.
It also determines whether or not to transmit Router
Solicitations. If and only if the functional setting is to
accept Router Advertisements, Router Solicitations will be
transmitted.
Possible values are:
0 Do not accept Router Advertisements.
1 Accept Router Advertisements if forwarding is disabled.
2 Overrule forwarding behaviour. Accept Router Advertisements
even if forwarding is enabled.
Functional default: enabled if local forwarding is disabled.
disabled if local forwarding is enabled.
autoconf - BOOLEAN
Autoconfigure addresses using Prefix Information in Router
Advertisements.
Functional default: enabled if accept_ra_pinfo is enabled.
disabled if accept_ra_pinfo is disabled.
There is a flag IPV6_FORCE_ ACCEPT_ RA[1] that can be set on an interface to accept_ra's while keeping autoconf (slaac) disabled. I wonder if that's what should be enabled for dhcp interfaces not IPV6_AUTOCONF which also set the autocnf sysctl.
accept_ra - INTEGER
Accept Router Advertisements; autoconfigure using them.
It also determines whether or not to transmit Router
Solicitations. If and only if the functional setting is to
accept Router Advertisements, Router Solicitations will be
transmitted.
Possible values are:
0 Do not accept Router Advertisements.
1 Accept Router Advertisements if forwarding is disabled.
2 Overrule forwarding behaviour. Accept Router Advertisements
even if forwarding is enabled.
Functional default: enabled if local forwarding is disabled.
disabled if local forwarding is enabled.
autoconf - BOOLEAN
Autoconfigure addresses using Prefix Information in Router
Advertisements.
Functional default: enabled if accept_ra_pinfo is enabled.
disabled if accept_ra_pinfo is disabled.
[1] https:/ /github. com/fedora- sysv/initscript s/commit/ 28745ca8101b47b 8a33213cfc524a4 ada742721b