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vrrp: For use_vmac and use_ipvlan, copy the group from the base interface #2390

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Mar 1, 2024
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vrrp: For use_vmac and use_ipvlan, copy the group from the base interface #2390

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9 changes: 9 additions & 0 deletions keepalived/vrrp/vrrp_vmac.c
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Original file line number Diff line number Diff line change
Expand Up @@ -277,6 +277,7 @@ netlink_link_add_vmac(vrrp_t *vrrp, const interface_t *old_interface)
struct rtattr *linkinfo;
struct rtattr *data;
interface_t *ifp;
uint32_t group;
bool create_interface = true;
struct {
struct nlmsghdr n;
Expand Down Expand Up @@ -386,6 +387,14 @@ netlink_link_add_vmac(vrrp_t *vrrp, const interface_t *old_interface)
addattr32(&req.n, sizeof(req), IFLA_LINK, vrrp->configured_ifp->ifindex);
addattr_l(&req.n, sizeof(req), IFLA_IFNAME, vrrp->vmac_ifname, strlen(vrrp->vmac_ifname));
}

/*
* Copy the group from the base interface to allow firewall rules
* (iptables devgroup or nftables iifgroup, oifgroup) to continue
* working regardless of the use_vmac setting.
*/
group = vrrp->configured_ifp->base_ifp->group;
addattr_l(&req.n, sizeof(req), IFLA_GROUP, &group, sizeof(group));
addattr_l(&req.n, sizeof(req), IFLA_ADDRESS, if_ll_addr, ETH_ALEN);

#ifdef _HAVE_VRF_
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