[Pkg-utopia-maintainers] Bug#1025073: network-manager: accept_ra reset to 0

[Yangfl]

Package: network-manager
Version: 1.40.4-1
Tags: ipv6

Dear Maintainer,

Whenever I reconnect to the network, accept_ra is reset to 0 by
network-manager, which makes ipv6 inaccessible. The only way to
workaround it is to set a hard-coded address.

$ nmcli con d con
$ sudo sysctl net.ipv6.conf.enp2s0.accept_ra=1
net.ipv6.conf.enp2s0.accept_ra = 1
$ nmcli con u con
$ sysctl net.ipv6.conf.enp2s0.accept_ra
net.ipv6.conf.enp2s0.accept_ra = 0
$ sysctl net.ipv6.conf.all
net.ipv6.conf.all.accept_dad = 0
net.ipv6.conf.all.accept_ra = 1
net.ipv6.conf.all.accept_ra_defrtr = 1
net.ipv6.conf.all.accept_ra_from_local = 0
net.ipv6.conf.all.accept_ra_min_hop_limit = 1
net.ipv6.conf.all.accept_ra_mtu = 1
net.ipv6.conf.all.accept_ra_pinfo = 1
net.ipv6.conf.all.accept_ra_rt_info_max_plen = 0
net.ipv6.conf.all.accept_ra_rt_info_min_plen = 0
net.ipv6.conf.all.accept_ra_rtr_pref = 1
net.ipv6.conf.all.accept_redirects = 1
net.ipv6.conf.all.accept_source_route = 0
net.ipv6.conf.all.accept_untracked_na = 0
net.ipv6.conf.all.addr_gen_mode = 0
net.ipv6.conf.all.autoconf = 1
net.ipv6.conf.all.dad_transmits = 1
net.ipv6.conf.all.disable_ipv6 = 0
net.ipv6.conf.all.disable_policy = 0
net.ipv6.conf.all.drop_unicast_in_l2_multicast = 0
net.ipv6.conf.all.drop_unsolicited_na = 0
net.ipv6.conf.all.enhanced_dad = 1
net.ipv6.conf.all.force_mld_version = 0
net.ipv6.conf.all.force_tllao = 0
net.ipv6.conf.all.forwarding = 0
net.ipv6.conf.all.hop_limit = 64
net.ipv6.conf.all.ignore_routes_with_linkdown = 0
net.ipv6.conf.all.ioam6_enabled = 0
net.ipv6.conf.all.ioam6_id = 65535
net.ipv6.conf.all.ioam6_id_wide = 4294967295
net.ipv6.conf.all.keep_addr_on_down = 0
net.ipv6.conf.all.max_addresses = 16
net.ipv6.conf.all.max_desync_factor = 600
net.ipv6.conf.all.mc_forwarding = 0
net.ipv6.conf.all.mldv1_unsolicited_report_interval = 10000
net.ipv6.conf.all.mldv2_unsolicited_report_interval = 1000
net.ipv6.conf.all.mtu = 1280
net.ipv6.conf.all.ndisc_evict_nocarrier = 1
net.ipv6.conf.all.ndisc_notify = 0
net.ipv6.conf.all.ndisc_tclass = 0
net.ipv6.conf.all.optimistic_dad = 0
net.ipv6.conf.all.proxy_ndp = 0
net.ipv6.conf.all.ra_defrtr_metric = 1024
net.ipv6.conf.all.regen_max_retry = 3
net.ipv6.conf.all.router_probe_interval = 60
net.ipv6.conf.all.router_solicitation_delay = 1
net.ipv6.conf.all.router_solicitation_interval = 4
net.ipv6.conf.all.router_solicitation_max_interval = 3600
net.ipv6.conf.all.router_solicitations = -1
net.ipv6.conf.all.rpl_seg_enabled = 0
net.ipv6.conf.all.seg6_enabled = 0
net.ipv6.conf.all.seg6_require_hmac = 0
sysctl: permission denied on key 'net.ipv6.conf.all.stable_secret'
net.ipv6.conf.all.suppress_frag_ndisc = 1
net.ipv6.conf.all.temp_prefered_lft = 86400
net.ipv6.conf.all.temp_valid_lft = 604800
net.ipv6.conf.all.use_oif_addrs_only = 0
net.ipv6.conf.all.use_optimistic = 0
net.ipv6.conf.all.use_tempaddr = 0
$ sysctl net.ipv6.conf.enp2s0
net.ipv6.conf.enp2s0.accept_dad = 1
net.ipv6.conf.enp2s0.accept_ra = 0
net.ipv6.conf.enp2s0.accept_ra_defrtr = 1
net.ipv6.conf.enp2s0.accept_ra_from_local = 0
net.ipv6.conf.enp2s0.accept_ra_min_hop_limit = 1
net.ipv6.conf.enp2s0.accept_ra_mtu = 1
net.ipv6.conf.enp2s0.accept_ra_pinfo = 1
net.ipv6.conf.enp2s0.accept_ra_rt_info_max_plen = 0
net.ipv6.conf.enp2s0.accept_ra_rt_info_min_plen = 0
net.ipv6.conf.enp2s0.accept_ra_rtr_pref = 1
net.ipv6.conf.enp2s0.accept_redirects = 1
net.ipv6.conf.enp2s0.accept_source_route = 0
net.ipv6.conf.enp2s0.accept_untracked_na = 0
net.ipv6.conf.enp2s0.addr_gen_mode = 1
net.ipv6.conf.enp2s0.autoconf = 1
net.ipv6.conf.enp2s0.dad_transmits = 1
net.ipv6.conf.enp2s0.disable_ipv6 = 0
net.ipv6.conf.enp2s0.disable_policy = 0
net.ipv6.conf.enp2s0.drop_unicast_in_l2_multicast = 0
net.ipv6.conf.enp2s0.drop_unsolicited_na = 0
net.ipv6.conf.enp2s0.enhanced_dad = 1
net.ipv6.conf.enp2s0.force_mld_version = 0
net.ipv6.conf.enp2s0.force_tllao = 0
net.ipv6.conf.enp2s0.forwarding = 0
net.ipv6.conf.enp2s0.hop_limit = 64
net.ipv6.conf.enp2s0.ignore_routes_with_linkdown = 0
net.ipv6.conf.enp2s0.ioam6_enabled = 0
net.ipv6.conf.enp2s0.ioam6_id = 65535
net.ipv6.conf.enp2s0.ioam6_id_wide = 4294967295
net.ipv6.conf.enp2s0.keep_addr_on_down = 0
net.ipv6.conf.enp2s0.max_addresses = 16
net.ipv6.conf.enp2s0.max_desync_factor = 600
net.ipv6.conf.enp2s0.mc_forwarding = 0
net.ipv6.conf.enp2s0.mldv1_unsolicited_report_interval = 10000
net.ipv6.conf.enp2s0.mldv2_unsolicited_report_interval = 1000
net.ipv6.conf.enp2s0.mtu = 1500
net.ipv6.conf.enp2s0.ndisc_evict_nocarrier = 1
net.ipv6.conf.enp2s0.ndisc_notify = 0
net.ipv6.conf.enp2s0.ndisc_tclass = 0
net.ipv6.conf.enp2s0.optimistic_dad = 0
net.ipv6.conf.enp2s0.proxy_ndp = 0
net.ipv6.conf.enp2s0.ra_defrtr_metric = 1024
net.ipv6.conf.enp2s0.regen_max_retry = 3
net.ipv6.conf.enp2s0.router_probe_interval = 60
net.ipv6.conf.enp2s0.router_solicitation_delay = 1
net.ipv6.conf.enp2s0.router_solicitation_interval = 4
net.ipv6.conf.enp2s0.router_solicitation_max_interval = 3600
net.ipv6.conf.enp2s0.router_solicitations = -1
net.ipv6.conf.enp2s0.rpl_seg_enabled = 0
net.ipv6.conf.enp2s0.seg6_enabled = 0
net.ipv6.conf.enp2s0.seg6_require_hmac = 0
sysctl: permission denied on key 'net.ipv6.conf.enp2s0.stable_secret'
net.ipv6.conf.enp2s0.suppress_frag_ndisc = 1
net.ipv6.conf.enp2s0.temp_prefered_lft = 86400
net.ipv6.conf.enp2s0.temp_valid_lft = 604800
net.ipv6.conf.enp2s0.use_oif_addrs_only = 0
net.ipv6.conf.enp2s0.use_optimistic = 0
net.ipv6.conf.enp2s0.use_tempaddr = 0
$ cat /etc/NetworkManager/system-connections/con
[connection]
id=con
uuid=xxx
type=ethernet
interface-name=enp2s0
timestamp=1669737523

[ethernet]
auto-negotiate=true
cloned-mac-address=xxx
mac-address=xxx

[ipv4]
address1=xxx
dns=xxx
method=manual

[ipv6]
addr-gen-mode=eui64
dns=xxx
method=auto

[proxy]