Internet verbindung funktioniert manchmal nicht

# ifconfig eth0 mtu 1400
# echo "0" > /proc/sys/net/ipv4/tcp_ecn

### BEGIN INFO
#
# Modified_by:  dhcpcd
# Backup:       /etc/resolv.conf.saved.by.dhcpcd
# Process:      dhcpcd
# Process_id:   640
# Script:       /sbin/modify_resolvconf
# Saveto:
# Info:         This is a temporary resolv.conf created by service dhcpcd.
#               The previous file has been saved and will be restored later.
#
#               If you don't like your resolv.conf to be changed, you
#               can set MODIFY_{RESOLV,NAMED}_CONF_DYNAMICALLY=no. This
#               variables are placed in /etc/sysconfig/network/config.
#
#               You can also configure service dhcpcd not to modify it.
#
#               If you don't like dhcpcd to change your nameserver
#               settings
#               then either set DHCLIENT_MODIFY_RESOLV_CONF=no
#               in /etc/sysconfig/network/dhcp, or
#               set MODIFY_RESOLV_CONF_DYNAMICALLY=no in
#               /etc/sysconfig/network/config or (manually) use dhcpcd
#               with -R.  If you only want to keep your searchlist, set
#               DHCLIENT_KEEP_SEARCHLIST=yes in /etc/sysconfig/network/dhcp or
#               (manually) use the -K option.
#
### END INFO
search |ª@|ª@
nameserver 192.168.1.1