#ifconfig
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last Login: Fri Nov 10 17:50:12 2017
guy@rpi5:~ $ ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.2.126  netmask 255.255.255.0  broadcast 192.168.2.255
        inet6 fe80::1004:51ed:dd4a:afb1  prefixlen 64  scopeid 0x20<link>
        ether 00:e0:4c:53:44:58  txqueuelen 1000  (Ethernet)
        RX packets 238  bytes 21795 (21.2) KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 98  bytes 12524 (12.2) KiB)
        TX errors 0  dropped 0  overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host
        loop  txqueuelen 1  (Local Loopback)
        RX packets 8  bytes 312 (312.0) B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 8  bytes 312 (312.00) B)
        TX errors 0  dropped 0  overruns 0  carrier 0  collisions 0

rename3: 4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.2.131  netmask 255.255.255.0  broadcast 192.168.2.255
        inet6 fe80::63b7:510d:eac5:2e04  prefixlen 64  scopeid 0x20<link>
        inet6 fe80::8826:3fd9:48c5:8ab5  prefixlen 64  scopeid 0x20<link>
        ether 8c:b8:2b:00:52:12  txqueuelen 1000  (Ethernet)
        RX packets 414  bytes 56976 (55.6) KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 74  bytes 10758 (10.5) KiB)
        TX errors 0  dropped 0  overruns 0  carrier 0  collisions 0

guy@rpi5:~ $ sudo systemctl status dhcpcd
u25cf dhcpcd.service - dhcpcd on all interfaces
   Loaded: loaded (/lib/systemd/system/dhcpcd.service; enabled; vendor preset: e
  Drop-In: /etc/systemd/system/dhcpcd.service.d
           u2514u2500wait.conf
   Active: active (running) since Fri 2017-11-10 17:50:00 IST; 2 days ago
  Process: 242 ExecStart=/usr/lib/dhcpcd5/dhcpcd -q -w (code=exited, status=0/SU
 Main PID: 508 (dhcpcd)
   CGroup: /system.slice/dhcpcd.service
           u2514u2500508 /sbin/dhcpcd -q -w

Nov 10 17:59:55 rpi5 dhcpcd[508]: rename3: deleting address fe80::63b7:510d:eac5
Nov 10 17:59:55 rpi5 dhcpcd[508]: rename3: carrier acquired
Nov 10 17:59:56 rpi5 dhcpcd[508]: rename3: IAID 2b:00:52:12
Nov 10 17:59:56 rpi5 dhcpcd[508]: rename3: adding address fe80::63b7:510d:eac5:2
Nov 10 17:59:56 rpi5 dhcpcd[508]: rename3: probing address 192.168.2.117/24
Nov 10 17:59:56 rpi5 dhcpcd[508]: rename3: soliciting an IPv6 router
Nov 10 18:00:01 rpi5 dhcpcd[508]: rename3: using static address 192.168.2.117/24
Nov 10 18:00:01 rpi5 dhcpcd[508]: rename3: adding route to 192.168.2.0/24
Nov 10 18:00:01 rpi5 dhcpcd[508]: rename3: adding default route via 192.168.2.1
Nov 10 18:00:09 rpi5 dhcpcd[508]: rename3: no IPv6 Routers available

guy@rpi5:~ $ cat /etc/dhcpcd.conf

# A sample configuration for dhcpcd.
# See dhcpcd.conf(5) for details.

# Allow users of this group to interact with dhcpcd via the control socket.
#controlgroup wheel

# Inform the DHCP server of our hostname for DDNS.
hostname

# Use the hardware address of the interface for the Client ID.
clientid
# or
# Use the same DUID + IAID as set in DHCPv6 for DHCPv4 ClientID as per RFC4361.
# Some non-RFC compliant DHCP servers do not reply with this set.
# In this case, comment out duid and enable clientid above.
#duid

# Persist interface configuration when dhcpcd exits.
persistent

# Rapid commit support.
# Safe to enable by default because it requires the equivalent option set
# on the server to actually work.
option rapid_commit

# A list of options to request from the DHCP server.
option domain_name_servers, domain_name, domain_search, host_name
option classless_static_routes
# Most distributions have NTP support.
option ntp_servers
# Respect the network MTU. This is applied to DHCP routes.
option interface_mtu

# A ServerID is required by RFC2131.
require dhcp_server_identifier

# Generate Stable Private IPv6 Addresses instead of hardware based ones
slaac private

# Example static IP configuration:
interface eth0
static ip_address=192.168.2.115/24
#static ip6_address=fd51:42f8:caae:d92e::ff/64
static routers=192.168.2.1
static domain_name_servers=192.168.2.1 #8.8.8.8 fd51:42f8:caae:d92e::1

interface rename3
static ip_address=192.168.2.117/24
static routers=192.168.2.1

# It is possible to fall back to a static IP if DHCP fails:
# define static profile

#profile static_eth0
#static ip_address=192.168.1.23/24
#static routers=192.168.1.1
#static domain_name_servers=192.168.1.1

# fallback to static profile on eth0
#interface eth0
#fallback static_eth0