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[bgp/attribute] Make sure EXTENDED attribute bit is off when clearing MP_UNREACH_NLRI during RIB rebuild

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This commit is contained in:
Lorenzo Cogotti 2021-06-08 11:08:36 +02:00
parent dd57ccac53
commit 3ab2e69bb2
1 changed files with 1 additions and 2 deletions
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3
lonetix/bgp/attribute.c
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@ -335,7 +335,6 @@ Judgement Bgp_RebuildMsgFromRib(const Prefix *nlri,
} }
if (flags & BGPF_CLEARUNREACH) { if (flags & BGPF_CLEARUNREACH) {
// Keep the attribute, but clear its contents // Keep the attribute, but clear its contents
Uint8 flags = attr->flags;
const Bgpmpfam *srcFam = Bgp_GetMpFamily(attr); const Bgpmpfam *srcFam = Bgp_GetMpFamily(attr);
if (!srcFam) if (!srcFam)
goto error; // error already set goto error; // error already set
@ -344,7 +343,7 @@ Judgement Bgp_RebuildMsgFromRib(const Prefix *nlri,
attrSiz = 3 + 2 + 1; attrSiz = 3 + 2 + 1;
Bgpattr *mpUnreach = (Bgpattr *) alloca(attrSiz); Bgpattr *mpUnreach = (Bgpattr *) alloca(attrSiz);
mpUnreach->flags = flags; mpUnreach->flags = attr->flags & ~BGP_ATTR_EXTENDED;
mpUnreach->code = BGP_ATTR_MP_UNREACH_NLRI; mpUnreach->code = BGP_ATTR_MP_UNREACH_NLRI;
mpUnreach->len = 3; mpUnreach->len = 3;