add feat

configure/generate.py

@@ -103,6 +103,14 @@ def get_router_id(router_name):
     return answer[0].address
 
 
+def isIP(ipstr):
+    try:
+        ipaddress.ip_address(ipstr)
+        return True
+    except ValueError:
+        return False
+
+
 def get_as_info(asn):
     """use peeringdb to get as info"""
 
@@ -667,6 +675,7 @@ def get_bgp_neighbor_cmd(
         {f"set protocols bgp neighbor {neighbor_address} ebgp-multihop {multihop}" if multihop else ""}
         set protocols bgp neighbor {neighbor_address} solo
         set protocols bgp neighbor {neighbor_address} update-source {neighbor["update-source"]}
+        {f"set protocols bgp neighbor {neighbor_address} interface source-interface {neighbor["update-source"]}" if not isIP(neighbor["update-source"]) else ""}
         {f"set protocols bgp neighbor {neighbor_address} timers holdtime {neighbor['holdtime']}" if "holdtime" in neighbor else ""}
         {f"set protocols bgp neighbor {neighbor_address} timers keepalive {neighbor['keepalive']}" if "keepalive" in neighbor else ""}
         {f"set protocols bgp neighbor {neighbor_address} address-family ipv{ipversion}-unicast addpath-tx-all" if "addpath" in neighbor and neighbor["addpath"] else ""}