On a router with multiple interfaces using DHCP to get its IP address. Is there a more direct way to find out which default-gateway (next-hop IP) is assigned to which interface? I have tried the "show dhcp lease" command but it does not give the default-gateway for all interfaces. It shows the DHCP Lease server which may not be the default-gateway.
Apr 20, 2020 · Two Default Routes. In some cases of migration, when trying to change an interface as a DHCP client, (which was previously assigned with a static IP from the ISP) notice two default routes in the routing table. When there are two default routes with the same metric value, the first installed route will take more preference. Enable DHCP Client Enabling the DHCP client causes the wireless gateway to automatically obtain the public IP address, subnet mask, domain name, and DNS server(s). Most commonly, the DHCP client is enabled if the cable service provider automatically assigns a public IP address from their DHCP server. Enable DHCP Client is on by default. Now, my problem is that the "routers" field from the DHCP seems to get ignored by CentOS 7. IP, netmask and hostname is being set correctly, but my default route is not being set (blank). As you can see, I am using netmask 255.255.255.255 so the gateway IP is "outside" of my network. Therefor an extra route is needed. If I run these manually: pi@raspberry:~ $ route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.0.30.0 0.0.0.0 255.255.255.0 U 202 0 0 eth0 If I run sudo dhclient or route add default gw 10.0.30.1 the default route is added and I can hit WAN no problem. But every time I restart the pi it loses this setting. Mar 08, 2013 · The DHCP server will not provide default gateway addresses to clients resulting in loss of connectivity for client computers. Resolution Use the DHCP MMC to configure the default gateway option at each scope. Dynamic Host Configuration Protocol (DHCP) uses options to pass additional Internet Protocol (IP) settings to DHCP clients on a network. default-lease-time: number of seconds the lease remains valid if the client requesting the lease do not specify the duration. max-lease-time: Maximum number of seconds allowed for a lease. 3. subnet-declaration. The subnet declaration includes a range of IP addresses that a DHCP server can assign to clients. You can specify multiple subnets here. The DHCP server manages a pool of IP addresses and information about client configuration parameters such as default gateway, domain name, the name servers, and time servers.
DHCP server assigns wrong gateway - Computing.Net
allow-hotplug enp0s3 auto enp0s3 iface enp0s3 inet dhcp allow-hotplug enp0s8 auto enp0s8 iface enp0s8 inet static address 192.168.56.3 netmask 255.255.255.0 gateway 192.168.56.1 When I boot I get the 2nd interface as the default gateway, but I need the first. Running this command manually solves it: ip route change default via 10.0.2.3 Jan 02, 2010 · I tried enabling the DHCP server on the wifi router (in a different address space) and it worked fantastically at giving out IP's, the only issue was it told the clients that it was the default gateway (192.168.0.5) instead of the true gateway which is the first router (192.168.0.1). I cannot simply switch the locations of the routers because i have restarted my computer, the router, DHCP is on, i have reinstalled my NIC's drivers, manually set the default gateway and IP and DNS, and all of them independently, ive -restarted- my DHCP Default Gateway, which should be set to the LAN IP address of the router DNS Server address – either the router LAN IP address or another DNS server on the Internet. You may use the same address that the router normally hands out via DHCP
In WinXP the dhcp default gateway was correctly overridden by this manual setting. In Win7 it appears that the dhcp default gateway is retained and the manual one is added to the list so that there are two with the dhcp one having the primary metric. I have tried several ways to remove the dhcp default gateway such as, running the "route delete
How to Configure The Network on CentOS7 – Linux Hint