Which command syntax would allow you extract the numbers $192\mathrm{.}168$ from the ifconfig command?

ifconfig $|$grep $192\mathrm{.}168$

Ifconfig $|$Find $192\mathrm{.}168$

Ifconfig $|$Grep $192\mathrm{.}168$

ifconfig $|$find $192\mathrm{.}168$