[HELP] VLAN/DHCP issues

[Santiago C]

Hi!

I am having some issues with my AC68U running Merlin's 378.56_2 regarding udhcpc. My networking knowledge is small, so I might be wrong though...

My WAN connection is a VDSL connection configured as PPPOE but my ISP provider requires a specific VLAN (150) to use the service, so I configured my WAN port to be tagged as such in the IPTV section of the router's GUI. That left me with 2 interfaces, ppp0 & vlan150.

Everything works good so far, I am fully able to use the connection but my syslog is flooded with lease fails from udhcpc (since I have dhcp-event script enabled for other purposes, I get a log entry for each execution).

If I see how the interfaces are configured, I have:

ppp0 Link encapoint-to-Point Protocol
inet addr:181.95.**.** P-t-P:200.3.**.** Mask:255.255.255.255
UP POINTOPOINT RUNNING MULTICAST MTU:1492 Metric:1
RX packets:19779 errors:0 dropped:0 overruns:0 frame:0
TX packets:22199 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:4280207 (4.0 MiB) TX bytes:7182161 (6.8 MiB)

vlan150 Link encap:Ethernet HWaddr AC:**:**:**:**:**
inet addr:169.254.22.109 Bcast:169.254.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:10983471 errors:0 dropped:0 overruns:0 frame:0
TX packets:12374649 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:5647912207 (5.2 GiB) TX bytes:6885245148 (6.4 GiB)

(asterisks my own)

Now, I have the following udhcpc process running:
/sbin/udhcpc -i vlan150 -p /var/run/udhcpc0.pid -s /tmp/udhcpc

And now my question: Could that process be the one generating the lease fails? I do not think that interface should be configured to use DHCP (proof being that it gets a link-local address). And if it shouldn't, how can I configure that interface to avoid using DHCP? I don't want to be killing the specific udhcpc process everytime it triggers...

Thanks!

 

[Santiago C]

So, I disabled the "Enable VPN + DHCP Connection" option in my WAN (WAN - Internet Connection - Special Requirement from ISP) and after issuing a "service restart_wan" that udhcpc process bound to interface vlan150 is gone... Everything seems to be working so far...