diff options
Diffstat (limited to 'src/network/networkd-link.c')
| -rw-r--r-- | src/network/networkd-link.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c index 9d4a69b0db..215c47b8af 100644 --- a/src/network/networkd-link.c +++ b/src/network/networkd-link.c @@ -1789,6 +1789,45 @@ static int link_set_ipv6_privacy_extensions(Link *link) { return 0; } +static int link_set_ipv6_accept_ra(Link *link) { + const char *p = NULL, *v = NULL; + bool b; + int r; + + /* Make this a NOP if IPv6 is not available */ + if (!socket_ipv6_is_supported()) + return 0; + + if (link->flags & IFF_LOOPBACK) + return 0; + + /* if unset check the ip forwarding setting maintained for the interface + * and then set it to depending on that. enabled if local forwarding + * is disabled. disabled if local forwarding is enabled. + */ + if (link->network->ipv6_accept_ra < 0) { + if (IN_SET(link->network->ip_forward, ADDRESS_FAMILY_YES, ADDRESS_FAMILY_IPV6)) + b = false; + else + b = true; + } else + b = link->network->ipv6_accept_ra; + + p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/accept_ra"); + v = one_zero(b); + + r = write_string_file(p, v, 0); + if (r < 0) { + /* If the right value is set anyway, don't complain */ + if (verify_one_line_file(p, v) > 0) + return 0; + + log_link_warning_errno(link, r, "Cannot configure IPv6 accept_ra for interface: %m"); + } + + return 0; +} + static int link_configure(Link *link) { int r; @@ -1812,6 +1851,10 @@ static int link_configure(Link *link) { if (r < 0) return r; + r = link_set_ipv6_accept_ra(link); + if (r < 0) + return r; + if (link_ipv4ll_enabled(link)) { r = ipv4ll_configure(link); if (r < 0) |