dhcpv4: force renew nonce authentication support

Support force renew nonce authentication support in the DHCPv4 server as
described in RFC3203 and RFC6704.
The interface uci arameter dhcpv4_forcereconf allows to supports DHCPv4
clients which support force renew without authentication.
While at it align network byte order logic for simplicity.

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/ndp.c b/src/ndp.c
index ec990ed..8ecc79b 100644
--- a/src/ndp.c
+++ b/src/ndp.c
@@ -341,6 +341,9 @@ static void check_addr_updates(struct interface *iface)
 	free(iface->addr4);
 	iface->addr4 = addr;
 	iface->addr4_len = len;
+
+	if (change)
+		dhcpv4_addr_update(iface);
 }
 
 // Check v6 address update