1. on vm > setting > network > bridged adapter
2.
on laptop
=====================================================
on DOS cmd !!!!!
C:\Users\>ipconfig -all
Windows IP Configuration
Host Name . . . . . . . . . . . . : DESKTOP-*****
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : ******
Ethernet adapter Ethernet 5:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : VirtualBox Host-Only Ethernet Adapter
Physical Address. . . . . . . . . : 0A-00-27-00-00-17
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::d6d3:a222:fb62:c216%23(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.56.1(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
DHCPv6 IAID . . . . . . . . . . . : 822738983
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-2D-80-59-CC-8C-04-BA-09-51-49
NetBIOS over Tcpip. . . . . . . . : Enabled
Wireless LAN adapter Local Area Connection* 1:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter
Physical Address. . . . . . . . . : D0-AB-D5-2C-F5-DE
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Wireless LAN adapter Local Area Connection* 10:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter #2
Physical Address. . . . . . . . . : D2-AB-D5-2C-F5-DD
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Wireless LAN adapter WiFi:
Connection-specific DNS Suffix . : lan
Description . . . . . . . . . . . : Intel(R) Dual Band Wireless-AC 8265
Physical Address. . . . . . . . . : D0-AB-D5-2C-F5-DD
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2a00:23c6:9735:5900:ddd6:4f4d:42d7:b65e(Preferred)
IPv6 Address. . . . . . . . . . . : fd78:4c15:7f9d::fa5(Preferred)
Lease Obtained. . . . . . . . . . : 25 December 2024 06:20:46
Lease Expires . . . . . . . . . . : 28 December 2024 07:22:17
IPv6 Address. . . . . . . . . . . : fd78:4c15:7f9d:0:241d:5b8:815f:9899(Preferred)
Temporary IPv6 Address. . . . . . : 2a00:23c6:9735:5900:18c3:619d:8145:53f5(Preferred)
Temporary IPv6 Address. . . . . . : 2a00:23c6:9735:5900:589a:f4b4:6eac:936a(Deprecated)
Temporary IPv6 Address. . . . . . : 2a00:23c6:9735:5900:6c49:e836:4352:6eb5(Deprecated)
Temporary IPv6 Address. . . . . . : 2a00:23c6:9735:5900:ecbc:b24d:a806:8b47(Deprecated)
Temporary IPv6 Address. . . . . . : 2a00:23c6:9735:5900:fd1f:74b6:8106:6ba2(Deprecated)
Temporary IPv6 Address. . . . . . : fd78:4c15:7f9d:0:18c3:619d:8145:53f5(Preferred)
Temporary IPv6 Address. . . . . . : fd78:4c15:7f9d:0:589a:f4b4:6eac:936a(Deprecated)
Temporary IPv6 Address. . . . . . : fd78:4c15:7f9d:0:6c49:e836:4352:6eb5(Deprecated)
Temporary IPv6 Address. . . . . . : fd78:4c15:7f9d:0:ecbc:b24d:a806:8b47(Deprecated)
Temporary IPv6 Address. . . . . . : fd78:4c15:7f9d:0:fd1f:74b6:8106:6ba2(Deprecated)
Link-local IPv6 Address . . . . . : fe80::f22a:c00e:45e2:27b7%2(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.213(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 25 December 2024 06:20:55
Lease Expires . . . . . . . . . . : 28 December 2024 07:22:05
Default Gateway . . . . . . . . . : fe80::ba6a:f1ff:fec4:ae90%2
192.168.1.254
DHCP Server . . . . . . . . . . . : 192.168.1.254
DHCPv6 IAID . . . . . . . . . . . : 47229909
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-2D-80-59-CC-8C-04-BA-09-51-49
DNS Servers . . . . . . . . . . . : 192.168.1.254 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< check dns !!!!!!!!!!
NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Bluetooth Network Connection:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
Physical Address. . . . . . . . . : D0-AB-D5-2C-F5-E1
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
=======================================================================================================
on vm !!!!
[root@srv1 ~]# ifconfig -a
enp0s3: flags=4163 mtu 1500 >>>> card name enp0s3
inet 192.168.1.120 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fd78:4c15:7f9d::677 prefixlen 128 scopeid 0x0
inet6 fe80::8f73:744d:ce36:6e12 prefixlen 64 scopeid 0x20
inet6 2a00:23c6:9735:5900:9af9:fed8:2570:486b prefixlen 64 scopeid 0x0
inet6 fd78:4c15:7f9d:0:1155:a65a:49d8:fcc8 prefixlen 64 scopeid 0x0
inet6 2a00:23c6:9735:5900::677 prefixlen 128 scopeid 0x0
ether 08:00:27:a5:38:cd txqueuelen 1000 (Ethernet)
RX packets 13009 bytes 1299156 (1.2 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2974 bytes 305294 (298.1 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
=========================================================================================
[root@srv1 ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.1.1 0.0.0.0 UG 100 0 0 enp0s3 <<<<<<<<<<<<<<<<<----- wrong gateway should be 192.168.1.254
192.168.1.0 0.0.0.0 255.255.255.0 U 100 0 0 enp0s3
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
[root@srv1 ~]#
[root@srv1 ~]# ip a
1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp0s3: mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 08:00:27:a5:38:cd brd ff:ff:ff:ff:ff:ff
inet 192.168.1.120/24 brd 192.168.1.255 scope global noprefixroute enp0s3
valid_lft forever preferred_lft forever
inet6 fd78:4c15:7f9d::677/128 scope global noprefixroute dynamic
valid_lft 86203sec preferred_lft 43003sec
inet6 2a00:23c6:9735:5900::677/128 scope global noprefixroute dynamic
valid_lft 86203sec preferred_lft 43003sec
inet6 fd78:4c15:7f9d:0:1155:a65a:49d8:fcc8/64 scope global noprefixroute
valid_lft forever preferred_lft forever
inet6 2a00:23c6:9735:5900:9af9:fed8:2570:486b/64 scope global noprefixroute dynamic
valid_lft 315274393sec preferred_lft 315274393sec
inet6 fe80::8f73:744d:ce36:6e12/64 scope link noprefixroute
valid_lft forever preferred_lft forever
3: virbr0: mtu 1500 qdisc noqueue state DOWN group default qlen 1000
link/ether 52:54:00:bd:bd:d5 brd ff:ff:ff:ff:ff:ff
inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
valid_lft forever preferred_lft forever
4: virbr0-nic: mtu 1500 qdisc pfifo_fast master virbr0 state DOWN group default qlen 1000
link/ether 52:54:00:bd:bd:d5 brd ff:ff:ff:ff:ff:ff
[root@srv1 ~]#
cat /etc/sysconfig/network-scripts/ifcfg-enp0s3
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=enp0s3
UUID=85024e4e-c958-4e04-8cda-3ed286b66822
DEVICE=enp0s3
ONBOOT=yes
IPV6_PRIVACY=no
IPADDR=192.168.1.120
PREFIX=24
GATEWAY=192.168.1.254 <<<< add dns router ip or add via this command >>> route add default gw 192.168.1.254 enp0s3
DNS1=192.168.1.254
================================
command !!!! or add on network card
route add default gw 192.168.1.254 enp0s3
=====================================
chattr -i /etc/resolv.conf
=====================================
edit below file
[root@srv1 ~]# cat /etc/resolv.conf
# Generated by NetworkManager
search localdomain
nameserver 192.168.1.254
nameserver 8.8.8.8
nameserver 8.8.4.4
chattr +i /etc/resolv.conf
=====================================
[root@srv1 ~]# ip route show
default via 192.168.1.1 dev enp0s3 proto static metric 100
192.168.1.0/24 dev enp0s3 proto kernel scope link src 192.168.1.120 metric 100
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1 linkdown
[root@srv1 ~]#
[root@srv1 ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.1.254 0.0.0.0 UG 100 0 0 enp0s3
192.168.1.0 0.0.0.0 255.255.255.0 U 100 0 0 enp0s3
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
nmcli connection down "connection_name"
nmcli connection up "connection_name"
nmcli connection down "enp0s3"
systemd-resolve --flush-caches
nmcli networking off
nmcli networking on
[root@srv1 ~]# systemctl restart NetworkManager
[root@srv1 ~]# systemctl status NetworkManager
[root@srv1 ~]# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=117 time=6.84 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=117 time=8.01 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=117 time=7.42 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=117 time=7.09 ms
64 bytes from 8.8.8.8: icmp_seq=5 ttl=117 time=7.15 ms
=============================================================================================================
dhcp setting
cat /etc/sysconfig/network-scripts/ifcfg-enp0s3
TYPE="Ethernet"
PROXY_METHOD="none"
BROWSER_ONLY="no"
BOOTPROTO="dhcp"
DEFROUTE="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_FAILURE_FATAL="no"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="enp0s3"
UUID="fdc2fc8c-f5b5-4e81-9c9e-b579991f2249"
DEVICE="enp0s3"
ONBOOT="yes"
[root@oragrid ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.1.254 0.0.0.0 UG 100 0 0 enp0s3
192.168.1.0 0.0.0.0 255.255.255.0 U 100 0 0 enp0s3
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
[root@oragrid ~]#
Friday, 27 December 2024
Linux virtual machine can't ping google while host can do it !!!!!
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