diff options
| -rw-r--r-- | networking/udhcp/dhcpc.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/networking/udhcp/dhcpc.c b/networking/udhcp/dhcpc.c index 29a6cd5a1..ddfe3ccc0 100644 --- a/networking/udhcp/dhcpc.c +++ b/networking/udhcp/dhcpc.c @@ -1355,9 +1355,23 @@ int udhcpc_main(int argc UNUSED_PARAM, char **argv) switch (udhcp_sp_read(&rfds)) { case SIGUSR1: client_config.first_secs = 0; /* make secs field count from 0 */ + already_waited_sec = 0; perform_renew(); - if (state == RENEW_REQUESTED) + if (state == RENEW_REQUESTED) { + /* We might be either on the same network + * (in which case renew might work), + * or we might be on a completely different one + * (in which case renew won't ever succeed). + * For the second case, must make sure timeout + * is not too big, or else we can send + * futile renew requests for hours. + * (Ab)use -A TIMEOUT value (usually 20 sec) + * as a cap on the timeout. + */ + if (timeout > tryagain_timeout) + timeout = tryagain_timeout; goto case_RENEW_REQUESTED; + } /* Start things over */ packet_num = 0; /* Kill any timeouts, user wants this to hurry along */ |