Questions tagged [udhcpc]

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udhcpc: DHCP option 66 variable tftp contains “bad” if DHCP server provides IP address instead of hostname

I am working on an embedded Linux which uses BusyBox and udhcpc (part of BusyBox) as its DHCP client. If I configure the DHCP server to deliver an FTP server in the DHCP option 66 everything is fine (...
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0answers
7 views

Connection Time of Wireless stations

I am writing a function code for Wireless Access Point (AP) which stores the information of the connected devices/stations. The attributes are frequency,station mac id and connection time. Frequency ...
2
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0answers
2k views

udhcpc: no lease, failing WHEN booting on embedded linux created by Buildroot

The responsiveness of the Linux service udhcpc (native DHCP relative to /etc/init.d/S40network service which invokes ip up and udhcpc) differs before and after logging at the prompt. When invoked via ...
4
votes
1answer
4k views

How to get BusyBox udhcpc to run in background forever?

I would like to configure eth0 on my BusyBox based Linux system to try and get a DHCP lease for 5 times, then run in the background forever if it doesn't get an IP after those 5 tries (i.e. does not ...
4
votes
1answer
9k views

How is udhcpc executed and how to change it?

I am working on an embedded system and it uses udhcpc as its DHCP client. It seems to be running with the following parameters: /usr/share/udhcpc # ps | grep dhcp 5366 root 2432 S udhcpc -R -...
0
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0answers
15 views

reset of a ubiquiti networks power ap - no love

Had to reset our ubnt power ap. It's on fiber, and should pull ip via dhcp. no pppoe weirdness here. even so, it cannot grab an ip. all cables are connected. tried mtu 1500 and 1492. I have ssh access ...
1
vote
1answer
490 views

How to broadcast two access points?

How do I broadcast two access points with two WiFi cards with hostapd? Most tutorials don't work since udhcpd doesn't work with two access points. Example tutorial: http://elinux.org/RPI-Wireless-...
2
votes
3answers
4k views

Overriding udchcp flags used by ifup in BusyBox

I am working on a system that I did not create the BusyBox build for. I do not want to recompile BusyBox for fear that my configuration will not completely match the original and besides this the ...
27
votes
8answers
99k views

What overwrites /etc/resolv.conf on every boot?

I was given the files for a mini linux, that boots directly into firefox. It works for all it should be doing, only that I do not get an internet connection. We have 3 DNS servers in the network, ...
1
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0answers
798 views

udhcpc starting before PHY is up

I'm having a issue with my Ethernet PHY not being up before eth0 tries to get an IP address This is my etc/network/interfaces # Configure Loopback auto lo iface lo inet loopback # The primary ...
2
votes
1answer
1k views

How to execute udhcpc as non-root

On a Linux machine, I am trying to run the udhcpc command as non-root. I am getting the error udhcpc: socket: Operation not permitted. Is there any way to execute udhcpc as a simple user in Linux?
2
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1answer
1k views

How to configure DHCP so that boot is completed even without a DHCP server?

I have configured /etc/network/interface like this: auto lo eth0 iface lo inet loopback iface eth0 inet dhcp But when a lease cannot be obtained, the booting is not completed. Is it possible to ...
4
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2answers
4k views

How do I use dhcpcd in openwrt instead of udhcpc?

I'm trying to determine the reason my router is not syncing up to my ISP, I do suspect snafu on their end so I'm trying to replicate my desktops setup which includes using dhcpcd. Problem is I don't ...