From c601ebf79f0c54be14d3c16f0f484c0335cdeec4 Mon Sep 17 00:00:00 2001 From: Tom Gundersen Date: Mon, 16 Nov 2015 17:43:08 +0100 Subject: sd-dhcp6-client: bind to link-local address This ensures that several DHCPv6 clients can run on separate interfaces simultaneously. --- src/network/networkd-address.c | 6 +++--- src/network/networkd-link.c | 13 +++++++++---- src/network/networkd-link.h | 4 ++-- 3 files changed, 14 insertions(+), 9 deletions(-) (limited to 'src/network') diff --git a/src/network/networkd-address.c b/src/network/networkd-address.c index c0562e5788..1ce1f4d8d6 100644 --- a/src/network/networkd-address.c +++ b/src/network/networkd-address.c @@ -347,9 +347,9 @@ int address_update(Address *address, unsigned char flags, unsigned char scope, s link_check_ready(address->link); if (address->family == AF_INET6 && - in_addr_is_link_local(AF_INET6, &address->in_addr) && - !address->link->ipv6ll_address) { - r = link_ipv6ll_gained(address->link); + in_addr_is_link_local(AF_INET6, &address->in_addr) > 0 && + in_addr_is_null(AF_INET6, (const union in_addr_union*) &address->link->ipv6ll_address) > 0) { + r = link_ipv6ll_gained(address->link, &address->in_addr.in6); if (r < 0) return r; } diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c index ba64473cd3..01d5942ce5 100644 --- a/src/network/networkd-link.c +++ b/src/network/networkd-link.c @@ -615,7 +615,7 @@ void link_check_ready(Link *link) { return; if (link_ipv6ll_enabled(link)) - if (!link->ipv6ll_address) + if (in_addr_is_null(AF_INET6, (const union in_addr_union*) &link->ipv6ll_address) > 0) return; if ((link_dhcp4_enabled(link) && !link_dhcp6_enabled(link) && @@ -1260,9 +1260,14 @@ static int link_acquire_ipv6_conf(Link *link) { if (link_dhcp6_enabled(link)) { assert(link->dhcp6_client); + assert(in_addr_is_link_local(AF_INET6, (const union in_addr_union*)&link->ipv6ll_address) > 0); log_link_debug(link, "Acquiring DHCPv6 lease"); + r = sd_dhcp6_client_set_local_address(link->dhcp6_client, &link->ipv6ll_address); + if (r < 0 && r != -EBUSY) + return log_link_warning_errno(link, r, "Could not set IPv6LL address in DHCP client: %m"); + r = sd_dhcp6_client_start(link->dhcp6_client); if (r < 0 && r != -EBUSY) return log_link_warning_errno(link, r, "Could not acquire DHCPv6 lease: %m"); @@ -2122,7 +2127,7 @@ static int link_configure(Link *link) { if (r < 0) return r; - if (link->ipv6ll_address) { + if (in_addr_is_null(AF_INET6, (const union in_addr_union*) &link->ipv6ll_address) == 0) { r = link_acquire_ipv6_conf(link); if (r < 0) return r; @@ -2473,14 +2478,14 @@ failed: return r; } -int link_ipv6ll_gained(Link *link) { +int link_ipv6ll_gained(Link *link, const struct in6_addr *address) { int r; assert(link); log_link_info(link, "Gained IPv6LL"); - link->ipv6ll_address = true; + link->ipv6ll_address = *address; link_check_ready(link); if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_PENDING, LINK_STATE_UNMANAGED, LINK_STATE_FAILED)) { diff --git a/src/network/networkd-link.h b/src/network/networkd-link.h index b564bcbca0..aa2235b11d 100644 --- a/src/network/networkd-link.h +++ b/src/network/networkd-link.h @@ -69,6 +69,7 @@ struct Link { char *ifname; char *state_file; struct ether_addr mac; + struct in6_addr ipv6ll_address; uint32_t mtu; struct udev_device *udev_device; @@ -101,7 +102,6 @@ struct Link { sd_ipv4ll *ipv4ll; bool ipv4ll_address:1; bool ipv4ll_route:1; - bool ipv6ll_address:1; bool static_configured; @@ -144,7 +144,7 @@ int link_save(Link *link); int link_carrier_reset(Link *link); bool link_has_carrier(Link *link); -int link_ipv6ll_gained(Link *link); +int link_ipv6ll_gained(Link *link, const struct in6_addr *address); int link_set_mtu(Link *link, uint32_t mtu); int link_set_hostname(Link *link, const char *hostname); -- cgit v1.2.3-54-g00ecf