From: Roy Marples <roy@marples.name>
Date: Tue, 28 Apr 2020 16:39:48 +0000 (+0000)
Subject: DHCP: Close sockets on carrier down
X-Git-Tag: v9.1.0~105
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3e72861dd03bd8ffb428fe937f2aa1615b8aadb0;p=thirdparty%2Fdhcpcd.git

DHCP: Close sockets on carrier down

This allows any BPF filter to reset family on carrier up.
---

diff --git a/src/dhcp.c b/src/dhcp.c
index 9af2dbd0..927f2137 100644
--- a/src/dhcp.c
+++ b/src/dhcp.c
@@ -2772,6 +2772,10 @@ dhcp_drop(struct interface *ifp, const char *reason)
 	dhcp_auth_reset(&state->auth);
 #endif
 
+	/* Close DHCP ports so a changed interface family is picked
+	 * up by a new BPF state. */
+	dhcp_close(ifp);
+
 	state->state = DHS_NONE;
 	free(state->offer);
 	state->offer = NULL;