On 06/01/18 20:57, Michael D. Setzer II wrote: > Have just had an issue with the dhcp ip addresses no longer working with the > latest kernels on my Fedora 27 machines. > > Have 4 machines at my house, 2 have fixed IP addresses, so had no > problems, but the other 2 machines stopped getting IPs. Didn't think anything > of it, and just assigned them fixed IP addresses. > > Have an old notebook that I had just been using, and did the updates. Then > rebooted, and it also would no longer get a connection with the 4.16.12 > kernel. Rebooted to the 4.16.11, and it connected with no problem?? > > Rebooted again with the 4.16.12, and it just shows connecting, but no > connection. > > Changed the setup to hard code an IP address on the wifi routers range, and > then it connects to the wifi just fine. > > So Wifi and dhcp connection works fine with 4.16.11, but fails with 4.16.12?? > Works with the IP address hard coded, so is this a kernel issue or what? You've not indicated what system is acting as the dhcp server. My system is running F28 and 4.16.12-300.fc28 kernel. It has one wired interface with a fixed IP and a WiFi interface that gets its IP address via DHCP from a router. No issues. Not much thought put into this.... But I did "journalctl -b | grep dhcp4 and this is the exchange. Jun 01 21:36:10 meimei.greshko.com NetworkManager[1017]: <info> [1527860170.5524] dhcp4 (wlp0s29u1u2): activation: beginning transaction (timeout in 45 seconds) Jun 01 21:36:10 meimei.greshko.com NetworkManager[1017]: <info> [1527860170.5554] dhcp4 (wlp0s29u1u2): dhclient started with pid 31750 Jun 01 21:36:10 meimei.greshko.com NetworkManager[1017]: <info> [1527860170.5924] dhcp4 (wlp0s29u1u2): address 192.168.2.190 Jun 01 21:36:10 meimei.greshko.com NetworkManager[1017]: <info> [1527860170.5925] dhcp4 (wlp0s29u1u2): plen 24 (255.255.255.0) Jun 01 21:36:10 meimei.greshko.com NetworkManager[1017]: <info> [1527860170.5925] dhcp4 (wlp0s29u1u2): gateway 192.168.2.5 Jun 01 21:36:10 meimei.greshko.com NetworkManager[1017]: <info> [1527860170.5925] dhcp4 (wlp0s29u1u2): lease time 86400 Jun 01 21:36:10 meimei.greshko.com NetworkManager[1017]: <info> [1527860170.5925] dhcp4 (wlp0s29u1u2): hostname 'meimei' Jun 01 21:36:10 meimei.greshko.com NetworkManager[1017]: <info> [1527860170.5926] dhcp4 (wlp0s29u1u2): nameserver '192.168.2.5' Jun 01 21:36:10 meimei.greshko.com NetworkManager[1017]: <info> [1527860170.5926] dhcp4 (wlp0s29u1u2): domain name 'greshko.com' Jun 01 21:36:10 meimei.greshko.com NetworkManager[1017]: <info> [1527860170.5926] dhcp4 (wlp0s29u1u2): state changed unknown -> bound -- Conjecture is just a conclusion based on incomplete information. It isn't a fact.
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