ip route save
save routing table information to stdout This command behaves like ip route show except that the output is raw data suitable for passing to ip route restore.
ip route restore
restore routing table information from stdin This command expects to read a data stream as returned from ip route save. It will attempt to restore the routing table information exactly as it was at the time of the save, so any translation of information in the stream (such as device indexes) must be done first. Any existing routes are left unchanged. Any routes specified in the data stream that already exist in the table will be ignored.
But when I use
ip route save > mydump , It return binary unlike of manual page, Is it a bug? Or I use wrongly?