[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/iptables/extensions/libipt_realm.man b/ap/app/iptables/extensions/libipt_realm.man
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+This matches the routing realm. Routing realms are used in complex routing
+setups involving dynamic routing protocols like BGP.
+.TP
+[\fB!\fP] \fB\-\-realm\fP \fIvalue\fP[\fB/\fP\fImask\fP]
+Matches a given realm number (and optionally mask). If not a number, value
+can be a named realm from /etc/iproute2/rt_realms (mask can not be used in
+that case).