From c76feb81477381f6c1170c0fab5ee8fe54df1217 Mon Sep 17 00:00:00 2001
From: gpotter2 <10530980+gpotter2@users.noreply.github.com>
Date: Sun, 6 Oct 2024 21:53:03 +0200
Subject: [PATCH] Work around GH#4541

---
 scapy/arch/linux/rtnetlink.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/scapy/arch/linux/rtnetlink.py b/scapy/arch/linux/rtnetlink.py
index a5e18bdb698..e57d2459c8c 100644
--- a/scapy/arch/linux/rtnetlink.py
+++ b/scapy/arch/linux/rtnetlink.py
@@ -887,6 +887,9 @@ def read_routes():
     ifaces = _get_if_list()
     results = _read_routes(socket.AF_INET)
     for msg in results:
+        # Omit stupid answers (some OS conf appears to lead to this)
+        if msg.rtm_family != socket.AF_INET:
+            continue
         # Process the RTM_NEWROUTE
         net = 0
         mask = itom(msg.rtm_dst_len)
@@ -937,6 +940,9 @@ def read_routes6():
     results = _read_routes(socket.AF_INET6)
     lifaddr = _get_ips(af_family=socket.AF_INET6)
     for msg in results:
+        # Omit stupid answers (some OS conf appears to lead to this)
+        if msg.rtm_family != socket.AF_INET6:
+            continue
         # Process the RTM_NEWROUTE
         prefix = "::"
         plen = msg.rtm_dst_len