From f4ef1c196c6133a4048eb12766eb0822274e69a2 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Mon, 31 Jan 2022 12:54:21 +0900
Subject: network: disable NDisc for CAN interfaces

We already disabled DHCP clients for CAN interfaces.
---
 src/network/networkd-ndisc.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/network/networkd-ndisc.c')

diff --git a/src/network/networkd-ndisc.c b/src/network/networkd-ndisc.c
index 4193b51093..06c4366b70 100644
--- a/src/network/networkd-ndisc.c
+++ b/src/network/networkd-ndisc.c
@@ -6,6 +6,7 @@
 #include <arpa/inet.h>
 #include <netinet/icmp6.h>
 #include <linux/if.h>
+#include <linux/if_arp.h>
 
 #include "sd-ndisc.h"
 
@@ -34,6 +35,9 @@ bool link_ipv6_accept_ra_enabled(Link *link) {
         if (link->flags & IFF_LOOPBACK)
                 return false;
 
+        if (link->iftype == ARPHRD_CAN)
+                return false;
+
         if (link->hw_addr.length != ETH_ALEN && !streq_ptr(link->kind, "wwan"))
                 /* Currently, only interfaces whose MAC address length is ETH_ALEN are supported.
                  * Note, wwan interfaces may be assigned MAC address slightly later.
-- 
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