From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Tue, 28 Sep 2021 06:01:06 +0000 (+0900)
Subject: sd-lldp-rx: add comments about the three multicast addresses
X-Git-Tag: v250-rc1~612^2~9
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=e9ea43136cab8f95075869657cf8736e33699252;p=thirdparty%2Fsystemd.git

sd-lldp-rx: add comments about the three multicast addresses
---

diff --git a/src/libsystemd-network/lldp-network.c b/src/libsystemd-network/lldp-network.c
index 43141b2d795..d11af3ebbbd 100644
--- a/src/libsystemd-network/lldp-network.c
+++ b/src/libsystemd-network/lldp-network.c
@@ -56,15 +56,18 @@ int lldp_network_bind_raw_socket(int ifindex) {
         if (r < 0)
                 return -errno;
 
+        /* customer bridge */
         r = setsockopt(fd, SOL_PACKET, PACKET_ADD_MEMBERSHIP, &mreq, sizeof(mreq));
         if (r < 0)
                 return -errno;
 
+        /* non TPMR bridge */
         mreq.mr_address[ETH_ALEN - 1] = 0x03;
         r = setsockopt(fd, SOL_PACKET, PACKET_ADD_MEMBERSHIP, &mreq, sizeof(mreq));
         if (r < 0)
                 return -errno;
 
+        /* nearest bridge */
         mreq.mr_address[ETH_ALEN - 1] = 0x0E;
         r = setsockopt(fd, SOL_PACKET, PACKET_ADD_MEMBERSHIP, &mreq, sizeof(mreq));
         if (r < 0)