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zebra: Mark some bsd interface prefixes as SECONDARY

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Notice when a ip address on a bsd interface is considered
an alias, let's mark the connected prefix we generate as
a SECONDARY.

Signed-off-by: Donald Sharp <sharpd@nvidia.com>
This commit is contained in:
Donald Sharp 2021-07-20 10:12:04 -04:00
parent 1dce93dabb
commit ecff5258a0
1 changed files with 9 additions and 3 deletions
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12
zebra/kernel_socket.c
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@ -849,8 +849,8 @@ int ifam_read(struct ifa_msghdr *ifam)
bool dest_same = false; bool dest_same = false;
char ifname[INTERFACE_NAMSIZ]; char ifname[INTERFACE_NAMSIZ];
short ifnlen = 0; short ifnlen = 0;
char isalias = 0; bool isalias = false;
int flags = 0; uint32_t flags = 0;
ifname[0] = ifname[INTERFACE_NAMSIZ - 1] = '\0'; ifname[0] = ifname[INTERFACE_NAMSIZ - 1] = '\0';
@ -865,7 +865,13 @@ int ifam_read(struct ifa_msghdr *ifam)
} }
if (ifnlen && strncmp(ifp->name, ifname, INTERFACE_NAMSIZ)) if (ifnlen && strncmp(ifp->name, ifname, INTERFACE_NAMSIZ))
isalias = 1; isalias = true;
/*
* Mark the alias prefixes as secondary
*/
if (isalias)
SET_FLAG(flags, ZEBRA_IFA_SECONDARY);
/* N.B. The info in ifa_msghdr does not tell us whether the RTA_BRD /* N.B. The info in ifa_msghdr does not tell us whether the RTA_BRD
field contains a broadcast address or a peer address, so we are field contains a broadcast address or a peer address, so we are