Trouble with ICS (was Re: Ad-hoc network: cannot ping other machine)

[Patrick McMunn <doctorwhoguy gmail com>]

Thanks for pointing me to /var/log/messages. I saw an error regarding
dnsmasq, and I remembered reading somewhere about conflicts between
dnsmasq and NetworkManager. I had dnsmasq starting up at boot. I
removed it from my boot process, and now I can create a ICS connection
on my desktop computer. I also had to disable the ifnet plugin because
it seems to screw pretty much everything up. Nothing except connecting
to an infrastructure network seems to work with ifnet.

There seems to be only one last hurdle to clear: I started up my
laptop to connect to the network I created on my desktop, and it won't
connect. On my laptop I tried changing the IPv4 settings to DHCP and
link-local, but neither works. What could be preventing the connection
here?

On 10/10/11, Patrick McMunn <doctorwhoguy gmail com> wrote:
> I rebooted and attempted to connect after reboot before connecting to
> the internet. Here's the relevant parts of /var/log/messages
>
> (This line about Avahi was a bit earlier in the log, but I'm including
> it in case it's relevant)
>
> Oct 10 20:49:07 localhost dbus[4111]: [system] Failed to activate
> service 'org.freedesktop.Avahi': timed out
>
>
> Oct 10 20:50:20 localhost NetworkManager[4128]: <info> Activation
> (wlan0) starting connection 'share'
> Oct 10 20:50:20 localhost NetworkManager[4128]: <info> (wlan0): device
> state change: disconnected -> prepare (reason 'none') [30 40 0]
> Oct 10 20:50:20 localhost NetworkManager[4128]: <info> Activation
> (wlan0) Stage 1 of 5 (Device Prepare) scheduled...
> Oct 10 20:50:20 localhost NetworkManager[4128]: <info> Activation
> (wlan0) Stage 1 of 5 (Device Prepare) started...
> Oct 10 20:50:20 localhost NetworkManager[4128]: <info> Activation
> (wlan0) Stage 2 of 5 (Device Configure) scheduled...
> Oct 10 20:50:20 localhost NetworkManager[4128]: <info> Activation
> (wlan0) Stage 1 of 5 (Device Prepare) complete.
> Oct 10 20:50:20 localhost NetworkManager[4128]: <info> Activation
> (wlan0) Stage 2 of 5 (Device Configure) starting...
> Oct 10 20:50:20 localhost NetworkManager[4128]: <info> (wlan0): device
> state change: prepare -> config (reason 'none') [40 50 0]
> Oct 10 20:50:20 localhost NetworkManager[4128]: <info> Activation
> (wlan0/wireless): connection 'share' requires no security.  No secrets
> needed.
> Oct 10 20:50:20 localhost NetworkManager[4128]: <info> Config: added
> 'ssid' value 'share'
> Oct 10 20:50:20 localhost NetworkManager[4128]: <info> Config: added
> 'mode' value '1'
> Oct 10 20:50:20 localhost NetworkManager[4128]: <info> Config: added
> 'frequency' value '2457'
> Oct 10 20:50:20 localhost NetworkManager[4128]: <info> Config: added
> 'key_mgmt' value 'NONE'
> Oct 10 20:50:20 localhost NetworkManager[4128]: <info> Activation
> (wlan0) Stage 2 of 5 (Device Configure) complete.
> Oct 10 20:50:20 localhost NetworkManager[4128]: <info> Config: set
> interface ap_scan to 2
> Oct 10 20:50:20 localhost kernel: [  212.847047] b43-phy0: Loading
> firmware version 478.104 (2008-07-01 00:50:23)
> Oct 10 20:50:20 localhost kernel: [  212.896155] wlan0: Trigger new
> scan to find an IBSS to join
> Oct 10 20:50:20 localhost NetworkManager[4128]: <info> (wlan0):
> supplicant interface state: inactive -> associating
> Oct 10 20:50:25 localhost kernel: [  218.004183] wlan0: Trigger new
> scan to find an IBSS to join
> Oct 10 20:50:29 localhost kernel: [  222.008033] wlan0: Trigger new
> scan to find an IBSS to join
> Oct 10 20:50:30 localhost kernel: [  223.090029] wlan0: no IPv6 routers
> present
> Oct 10 20:50:30 localhost kernel: [  223.303136] wlan0: Creating new
> IBSS network, BSSID aa:2e:d1:95:8d:23
> Oct 10 20:50:30 localhost NetworkManager[4128]: <info> (wlan0):
> supplicant interface state: associating -> completed
> Oct 10 20:50:30 localhost NetworkManager[4128]: <info> Activation
> (wlan0/wireless) Stage 2 of 5 (Device Configure) successful.
> Connected to wireless network 'share'.
> Oct 10 20:50:30 localhost NetworkManager[4128]: <info> Activation
> (wlan0) Stage 3 of 5 (IP Configure Start) scheduled.
> Oct 10 20:50:30 localhost NetworkManager[4128]: <info> Activation
> (wlan0) Stage 3 of 5 (IP Configure Start) started...
> Oct 10 20:50:30 localhost NetworkManager[4128]: <info> (wlan0): device
> state change: config -> ip-config (reason 'none') [50 70 0]
> Oct 10 20:50:30 localhost NetworkManager[4128]: <info> Activation
> (wlan0) Stage 4 of 5 (IP4 Configure Get) scheduled...
> Oct 10 20:50:30 localhost NetworkManager[4128]: <info> Activation
> (wlan0) Stage 3 of 5 (IP Configure Start) complete.
> Oct 10 20:50:30 localhost NetworkManager[4128]: <info> Activation
> (wlan0) Stage 4 of 5 (IP4 Configure Get) started...
> Oct 10 20:50:30 localhost NetworkManager[4128]: <info> Activation
> (wlan0) Stage 5 of 5 (IP Configure Commit) scheduled...
> Oct 10 20:50:30 localhost NetworkManager[4128]: <info> Activation
> (wlan0) Stage 4 of 5 (IP4 Configure Get) complete.
> Oct 10 20:50:30 localhost NetworkManager[4128]: <info> Activation
> (wlan0) Stage 5 of 5 (IP Configure Commit) started...
> Oct 10 20:50:31 localhost NetworkManager[4128]: <info> (wlan0):
> removing resolv.conf from /sbin/resolvconf
> Oct 10 20:50:31 localhost NetworkManager[4128]: <info> Clearing nscd
> hosts cache.
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Executing:
> /sbin/iptables --table filter --insert INPUT --in-interface wlan0
> --protocol tcp --destination-port 53 --jump ACCEPT
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Executing:
> /sbin/iptables --table filter --insert INPUT --in-interface wlan0
> --protocol udp --destination-port 53 --jump ACCEPT
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Executing:
> /sbin/iptables --table filter --insert INPUT --in-interface wlan0
> --protocol tcp --destination-port 67 --jump ACCEPT
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Executing:
> /sbin/iptables --table filter --insert INPUT --in-interface wlan0
> --protocol udp --destination-port 67 --jump ACCEPT
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Executing:
> /sbin/iptables --table filter --insert FORWARD --in-interface wlan0
> --jump REJECT
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Executing:
> /sbin/iptables --table filter --insert FORWARD --out-interface wlan0
> --jump REJECT
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Executing:
> /sbin/iptables --table filter --insert FORWARD --in-interface wlan0
> --out-interface wlan0 --jump ACCEPT
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Executing:
> /sbin/iptables --table filter --insert FORWARD --source
> 10.42.43.0/255.255.255.0 --in-interface wlan0 --jump ACCEPT
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Executing:
> /sbin/iptables --table filter --insert FORWARD --destination
> 10.42.43.0/255.255.255.0 --out-interface wlan0 --match state --state
> ESTABLISHED,RELATED --jump ACCEPT
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Executing:
> /sbin/iptables --table nat --insert POSTROUTING --source
> 10.42.43.0/255.255.255.0 ! --destination 10.42.43.0/255.255.255.0
> --jump MASQUERADE
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Starting dnsmasq...
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> (wlan0): device
> state change: ip-config -> activated (reason 'none') [70 100 0]
> Oct 10 20:50:32 localhost dnsmasq[5359]: failed to create listening
> socket for 10.42.43.1: Address already in use
> Oct 10 20:50:32 localhost dnsmasq[5359]: FAILED to start up
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Activation
> (wlan0) successful, device activated.
> Oct 10 20:50:32 localhost dbus[4111]: [system] Activating service
> name='org.freedesktop.nm_dispatcher' (using servicehelper)
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Activation
> (wlan0) Stage 5 of 5 (IP Configure Commit) complete.
> Oct 10 20:50:32 localhost NetworkManager[4128]: <warn> dnsmasq exited
> with error: Network access problem (address in use; permissions; etc)
> (2)
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> (wlan0): device
> state change: activated -> failed (reason 'sharing-start-failed') [100
> 120 18]
> Oct 10 20:50:32 localhost NetworkManager[4128]: <warn> Activation
> (wlan0) failed for access point (share)
> Oct 10 20:50:32 localhost NetworkManager[4128]: <warn> Activation
> (wlan0) failed.
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> (wlan0): device
> state change: failed -> disconnected (reason 'none') [120 30 0]
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> (wlan0):
> deactivating device (reason 'none') [0]
> Oct 10 20:50:32 localhost NetworkManager[4128]: <error>
> [1318297832.295257] [nm-device-wifi.c:1815] nm_device_wifi_set_mode():
> (wlan0): error setting mode 2
> Oct 10 20:50:32 localhost dnsmasq[4477]: no servers found in
> /etc/resolv.conf, will retry
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> (wlan0):
> removing resolv.conf from /sbin/resolvconf
> Oct 10 20:50:32 localhost dbus[4111]: [system] Successfully activated
> service 'org.freedesktop.nm_dispatcher'
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Clearing nscd
> hosts cache.
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Executing:
> /sbin/iptables --table nat --delete POSTROUTING --source
> 10.42.43.0/255.255.255.0 ! --destination 10.42.43.0/255.255.255.0
> --jump MASQUERADE
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Executing:
> /sbin/iptables --table filter --delete FORWARD --destination
> 10.42.43.0/255.255.255.0 --out-interface wlan0 --match state --state
> ESTABLISHED,RELATED --jump ACCEPT
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Executing:
> /sbin/iptables --table filter --delete FORWARD --source
> 10.42.43.0/255.255.255.0 --in-interface wlan0 --jump ACCEPT
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Executing:
> /sbin/iptables --table filter --delete FORWARD --in-interface wlan0
> --out-interface wlan0 --jump ACCEPT
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Executing:
> /sbin/iptables --table filter --delete FORWARD --out-interface wlan0
> --jump REJECT
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Executing:
> /sbin/iptables --table filter --delete FORWARD --in-interface wlan0
> --jump REJECT
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Executing:
> /sbin/iptables --table filter --delete INPUT --in-interface wlan0
> --protocol udp --destination-port 67 --jump ACCEPT
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Executing:
> /sbin/iptables --table filter --delete INPUT --in-interface wlan0
> --protocol tcp --destination-port 67 --jump ACCEPT
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Executing:
> /sbin/iptables --table filter --delete INPUT --in-interface wlan0
> --protocol udp --destination-port 53 --jump ACCEPT
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> Executing:
> /sbin/iptables --table filter --delete INPUT --in-interface wlan0
> --protocol tcp --destination-port 53 --jump ACCEPT
> Oct 10 20:50:32 localhost NetworkManager[4128]: <info> (wlan0):
> supplicant interface state: completed -> disconnected