Your message dated Fri, 12 Sep 2025 20:15:07 +0200
with message-id <[email protected]>
and subject line Re: network-manager: accept_ra reset to 0
has caused the Debian Bug report #1025073,
regarding network-manager: accept_ra reset to 0
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
1025073: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1025073
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
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]
--- End Message ---
--- Begin Message ---
On Wed, 30 Nov 2022 00:13:48 +0800 Yangfl <[email protected]> wrote:
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.
See
https://www.networkmanager.dev/docs/api/latest/nm-settings-nmcli.html →
ipv6.method
Sets the IPv6 connection method. You can set one of the following values:
"auto" - Enables IPv6 auto-configuration. By default, NetworkManager uses Router
Advertisements and, if the router announces the "managed" flag, NetworkManager requests
an IPv6 address and prefix from a DHCPv6 server.
"dhcp" - Requests an IPv6 address and prefix from a DHCPv6 server. Note that DHCPv6
does not have options to provide routes and the default gateway. As a consequence, by using the
"dhcp" method, connections are limited to their own subnet.
"manual" - Enables the configuration of static IPv6 addresses on the interface. Note
that you must set at least one IP address and prefix in the "ipv6.addresses" property.
"disabled" - Disables the IPv6 protocol in this connection profile.
"ignore" - Configures NetworkManager to make no changes to the IPv6 configuration on
the interface. For example, you can then use the "accept_ra" feature of the kernel to
accept Router Advertisements.
"shared" - Provides network access to other computers. NetworkManager
requests a prefix from an upstream DHCPv6 server, assigns an address to the interface,
and announces the prefix to clients that connect to this interface.
"link-local" - Assigns a random link-local address from the fe80::/64
subnet to the interface.
OpenPGP_signature.asc
Description: OpenPGP digital signature
--- End Message ---
